"More Than Just Obstacles —
We Build Confidence."
Discover Guam’s only Ninja Warrior gym — where kids, teens, and adults unleash their inner warrior.
💥 Ready to climb, swing, and conquer? Book your first visit and experience the ninja difference.
Start Your Ninja JourneyBy opting in, you agree to receive periodic text messages & emails from Guma i Sindalu Siha, LLC. Your information will never be shared. Reply STOP to cancel. Standard rates may apply.
Classes for All Ages
Obstacle Training & Skills Progression
Parties, Events & Competitions
What We Offer
Level Up Program — Our most empowering path to ninja mastery — A structured skill progression system that challenges athletes to master new obstacles, earn recognition, and build leadership.
Our signature Level Up Program is more than just a class — it’s a journey. Athletes of all ages train through structured levels, earning skill badges, mastering ninja techniques, and gaining real confidence along the way.
Whether you're a complete beginner or aiming for the national team, our coaches meet you where you are and help you grow stronger, faster, and more focused — one level at a time.
🎯 Skill-Based Progression
🏅 Belt-Like Ranking System
🧠 Builds Confidence, Discipline & Technique
Youth & Adult Memberships — Month-to-month, annual, and pay-in-full options
-
Ninja Warrior & Fitness Classes — Build agility, strength, and confidence
-
Open Gym Sessions — Practice at your own pace
-
Personal Training — One-on-one coaching to reach your goals
-
Birthday Parties & Events — Celebrate with an unforgettable ninja experience
-
Merch & Gear — Exclusive ninja apparel and training equipment
The Sindalu Ninja Games are our annual signature event, giving athletes on Guam the chance to test their skills, celebrate their progress, and work toward national and international competition. While the games are an important platform, our true focus is on the daily journey of growth, training, and community inside our gym.
At Guma i Sindalu Siha, we believe every person is capable of greatness — they just need the right environment to discover it.
Why Choose Guma i Sindalu Siha?
As Guam’s first and only ninja warrior gym, we’re creating something special — a safe, high-energy space where kids, teens, and adults challenge themselves, overcome fear, and grow stronger inside and out.
From structured ninja classes and open gym sessions to epic events like the Sindalu Ninja Games, our programs are built to inspire, empower, and transform.
Join a community that lifts you up, pushes you forward, and celebrates every victory — big or small.
.jpg)
Frequently Asked Questions
Check out the most frequently asked questions about Guma i Sindalu Siha, LLC.
Still haven't found the answer?
Contact UsIs there an age requirement?
Our gym is open to athletes ages 6 and up. For safety and insurance, we do not currently offer classes for younger children.
Do I need to be in shape to start?
Not at all!
Our gym is built for all fitness levels. Whether you're new to exercise or an experienced athlete, we’ll meet you where you are. Every obstacle can be scaled or modified to suit your ability, and our supportive coaches are here to guide you every step of the way.
👟 What type of shoes should I wear?
Please wear closed-toe, lace-up athletic sneakers with a rubber sole.
🚫 Not allowed:
-
Cleats or spiked shoes
-
Flip flops, zorries, Crocs, or sandals
-
Indoor soccer shoes, hiking shoes, or boots
All birthday party participants and parents NEED to be wearing clean tennis, running, or athletic shoes. We are a SHOES ON facility. No crocs, slip-on, sandals, heels, or boots will be allowed.
What age groups do you offer classes for?
We offer structured ninja classes for athletes ages 6 and up, divided by age and skill level:
-
🟦 Youth Levels 1–6 (Ages 6–13)
Our youth program is split into two training paths:
-
Youth Novice (Levels 1–3) –Ages 6–11
Focuses on foundational skills, safety, and confidence-building through fun and engaging challenges. -
Youth Advanced (Levels 4–6) – Ages 12–15
Introduces more technical skills, obstacle sequencing, and preparation for competitive events.
🟥 Teen & Adult Levels 1–5 (Ages 16+)
For beginners to advanced adults (and teens 14+), these classes are built for challenge, progress, and long-term growth.
Each level focuses on strength, endurance, technique, and leadership development — whether you're training recreationally or aiming for competition.All athletes are placed into the appropriate level after an initial assessment or based on performance in class. Everyone has the opportunity to “level up” through our skills-based progression system.
-
Do you host birthday parties?
Absolutely! Celebrate with obstacle-based fun in our gym—complete with coach-led activities, team challenges, and equipment use. Contact us to book your date and go over party packages.
What’s included in the Level Up Program?
Our Level Up Program is a structured training system that helps you progress through skill-based levels — just like earning belts in martial arts!
It includes:
-
🧠 Skill System – Learn core ninja skills and test your progress.
-
🧗 Level Placement – Train in the right class for your current ability.
-
🏅 Assessments & Promotions – Regular check-ins to celebrate your growth.
-
🎯 Motivation & Milestones – Clear goals and fun ways to level up.
It’s the perfect path for athletes who want to build confidence, track progress, and get stronger over time.
What is Open Gym?
This is drop-in time where members can train independently on the obstacles, practice skills, or get time-based coaching. A coach is on-site to assist, but sessions are self-guided.
What should I wear and bring to class?
Wear athletic clothes and lace-up sneakers (closed-toe, non marking shoes required) Bring a water bottle; we offer a hydration station. Outside food can't be consumed on the gym floor.
What’s your cancellation and no-show policy?
Please cancel at least 12 hours before your class to avoid penalties. No-shows or late cancels may result in a fee.
Do you offer camps or special training sessions?
Yes, we run seasonal camps (like summer camp) and workshops focusing on areas like obstacle technique, strength, and your ninja mindset.
How do I sign up for competitions?
You can register for our competitions, including the Sindalu Ninja Games, directly through our website or in person at the gym.
We host quarterly events and national qualifiers, and members receive priority registration and exclusive discounts.
What happens if someone damages equipment?
Accidents happen! We ask families and members to be responsible and report any issues. Damage caused by misuse may result in repair fees.
Can I try a class before signing up?
Yes!
We offer free trial classes so you can experience the gym, meet our coaches, and get a feel for the ninja training environment — no commitment needed. Please reach out to us to discuss further.
Can I bring my own food or celebrate on-site?
Birthday parties, Camps and special events with food must be scheduled in advance.
Otherwise, no food is allowed. Drinks are allowed, but only in approved areas as we want to keep our obstacles clean and safe for everyone! We ask that all drinks be kept in designated areas.
For safety and hygiene, no food or beverages are allowed in the ninja or training zones and to make sure hands are clean before getting back on the obstacles.
Schedule
Schedule
26 Mon
27 Tue
28 Wed
29 Thu
30 Fri
31 Sat
1
26
Sunday
Open Gym
Open Gym
Open Gym – Train Like a Ninja
Dial in your skills, test new obstacles, or just get in a great workout — this open gym is designed for ages 16+ who want to train at their own pace in a supportive ninja environment.
Details:
-
💥 Separate Youth (6-15) and adults (16+)
-
✅ Access to all designated training zones
-
✅ Staff present for safety and supervision
-
⏱ 2-hour, 1-hour or Unlimited options available
-
🎯 Ideal for independent training or skill progression
Note:
No formal coaching provided during Open Gym. Waiver required prior to participation.
Must book in person.
Birthday Party
Birthday Party
Celebrate like a Ninja!
Make your child’s birthday unforgettable with our action-packed Ninja party experience. This private 2-hour celebration includes obstacle-filled fun, exclusive use of our Ninja Zone, and a fully equipped party room.
🎂 Package Includes – 0:
-
🎟 Admission for up to 10 kids (ages 6-15 recommended)
-
🧗♂️ 80 minutes of exclusive access to our Youth Ninja Zone
-
🎉 40 minutes in your private party room to celebrate
-
🍽 Plates, cups, utensils & napkins included
-
🎁 Free Sindalu Ninja T-shirt for the birthday child
-
🎟 Free trial class for the birthday child to come back and train
-
🪑 Tables & chairs provided
-
🕒 extra time for set/clean up(15 min setup + 15 min cleanup before/after party)
🧑🤝🧑 Room holds up to 15-20 kids max. Adults may hang out in the party room at no extra charge.
📏 (Party room dimensions: 20ft x 14ft. Space is limited — seating not guaranteed for all adults.)
➕ Recommended Add-Ons
| Add-On | Description | Price Recommendation |
|---|---|---|
| Extra Child | Admission for 1 more child (beyond 10) | /child |
| Party Host | 1 staff-led mini “ninja challenge” (30–45 min) | |
| Set-Up & Clean-Up | Let us do the setup and cleanup! | |
| Extended Time | +30 extra minutes (on course) |
Birthday Party
Birthday Party
Celebrate like a Ninja!
Make your child’s birthday unforgettable with our action-packed Ninja party experience. This private 2-hour celebration includes obstacle-filled fun, exclusive use of our Ninja Zone, and a fully equipped party room.
🎂 Package Includes – 0:
-
🎟 Admission for up to 10 kids (ages 6-15 recommended)
-
🧗♂️ 80 minutes of exclusive access to our Youth Ninja Zone
-
🎉 40 minutes in your private party room to celebrate
-
🍽 Plates, cups, utensils & napkins included
-
🎁 Free Sindalu Ninja T-shirt for the birthday child
-
🎟 Free trial class for the birthday child to come back and train
-
🪑 Tables & chairs provided
-
🕒 extra time for set/clean up(15 min setup + 15 min cleanup before/after party)
🧑🤝🧑 Room holds up to 15-20 kids max. Adults may hang out in the party room at no extra charge.
📏 (Party room dimensions: 20ft x 14ft. Space is limited — seating not guaranteed for all adults.)
➕ Recommended Add-Ons
| Add-On | Description | Price Recommendation |
|---|---|---|
| Extra Child | Admission for 1 more child (beyond 10) | /child |
| Party Host | 1 staff-led mini “ninja challenge” (30–45 min) | |
| Set-Up & Clean-Up | Let us do the setup and cleanup! | |
| Extended Time | +30 extra minutes (on course) |
27
Monday
Youth Novice (L1-3)
Katrina Perez, Joann SalasYouth Novice (L1-3)
Youth Novice Ninja (Ages 6–10)
Introductory-level class designed for beginner ninjas.
This class focuses on developing coordination, balance, strength, and confidence through fun and safe obstacle challenges. Perfect for first-timers or younger athletes learning the basics of Ninja Warrior-style movement. Each week includes skill progressions and age-appropriate drills that promote focus and body control.
🔹 No experience needed
🔹 Capped at 8–10 students per instructor for safety and engagement
Youth Advanced (L4-6)
Deren Perez, Joann SalasYouth Advanced (L4-6)
Youth Advanced Ninja (Ages 11–15)
Progressive-level class for returning or older youth ninjas.
This class introduces more complex techniques, strength conditioning, and dynamic obstacles. Athletes build on foundational skills while working on grip strength, precision, and strategy. Suitable for students with prior ninja experience or athletic background in gymnastics, parkour, or climbing.
🔹 Coach approval or prior experience recommended
🔹 Focused on skill-building and competition prep
🔹 Capped at 10–12 students per instructor
Adult Ninja Class
Deren PerezAdult Ninja Class
Adult Ninja Warrior (Ages 16+)
All-levels class for adults from first-timers to advanced ninjas.
Whether you're just starting your ninja journey or training for competition, this class has something for you. We begin with fundamentals: bodyweight control, grip strength, obstacle basics, and safety techniques. As you progress, you'll take on more complex challenges like laches, warped walls, salmon ladders, and dynamic courses.
Coaches adjust for all levels and provide personal guidance based on ability. Build strength, confidence, and obstacle mastery at your pace — or get ready for the next Ninja competition.
🔹 Beginner-friendly & competition-prep ready
🔹 Modifications and progressions provided at every level
🔹 Great for fitness-focused adults or aspiring Ninja Warriors
Skills Lab
Skills Lab
Open Gym: Skill Progression
Level up your ninja skills at your own pace! This session is designed for members to practice techniques, refine movements, and progress through our signature “Level-Up” program. Whether you’re perfecting a tricky obstacle or building strength and confidence, our safe and supervised open gym environment lets you challenge yourself, track your progress, and improve your ninja skills.
28
Tuesday
Spartan/OCR Conditioning
Deren Perez CanceledSpartan/OCR Conditioning
Spartan/OCR Conditioning (Ages 16+)
Obstacle Course Race-focused training for Spartan athletes and weekend warriors.
This class blends strength, cardio, and grip-intensive conditioning tailored to the demands of Spartan Races and OCR events. You'll rotate through circuits involving carries, crawls, rope climbs, walls, rig stations, and running intervals — all designed to improve endurance, obstacle technique, and mental grit.
Whether you're training for your first 5K Spartan Sprint or aiming to crush a Beast, this class will push your limits and prepare you for race day.
🔹 All levels welcome — workouts scaled by ability
🔹 Emphasis on real-world OCR obstacle simulation
🔹 Great cross-training for Ninja athletes
Skills Lab
Skills Lab
Open Gym: Skill Progression
Level up your ninja skills at your own pace! This session is designed for members to practice techniques, refine movements, and progress through our signature “Level-Up” program. Whether you’re perfecting a tricky obstacle or building strength and confidence, our safe and supervised open gym environment lets you challenge yourself, track your progress, and improve your ninja skills.
29
Wednesday
Youth Novice (L1-3)
Katrina Perez, Joann SalasYouth Novice (L1-3)
Youth Novice Ninja (Ages 6–10)
Introductory-level class designed for beginner ninjas.
This class focuses on developing coordination, balance, strength, and confidence through fun and safe obstacle challenges. Perfect for first-timers or younger athletes learning the basics of Ninja Warrior-style movement. Each week includes skill progressions and age-appropriate drills that promote focus and body control.
🔹 No experience needed
🔹 Capped at 8–10 students per instructor for safety and engagement
Youth Advanced (L4-6)
Katrina Perez, Joann SalasYouth Advanced (L4-6)
Youth Advanced Ninja (Ages 11–15)
Progressive-level class for returning or older youth ninjas.
This class introduces more complex techniques, strength conditioning, and dynamic obstacles. Athletes build on foundational skills while working on grip strength, precision, and strategy. Suitable for students with prior ninja experience or athletic background in gymnastics, parkour, or climbing.
🔹 Coach approval or prior experience recommended
🔹 Focused on skill-building and competition prep
🔹 Capped at 10–12 students per instructor
Adult Ninja Class
Katrina PerezAdult Ninja Class
Adult Ninja Warrior (Ages 16+)
All-levels class for adults from first-timers to advanced ninjas.
Whether you're just starting your ninja journey or training for competition, this class has something for you. We begin with fundamentals: bodyweight control, grip strength, obstacle basics, and safety techniques. As you progress, you'll take on more complex challenges like laches, warped walls, salmon ladders, and dynamic courses.
Coaches adjust for all levels and provide personal guidance based on ability. Build strength, confidence, and obstacle mastery at your pace — or get ready for the next Ninja competition.
🔹 Beginner-friendly & competition-prep ready
🔹 Modifications and progressions provided at every level
🔹 Great for fitness-focused adults or aspiring Ninja Warriors
Skills Lab
Skills Lab
Open Gym – Train Like a Ninja
Dial in your skills, test new obstacles, or just get in a great workout — this open gym is designed for ages 16+ who want to train at their own pace in a supportive ninja environment.
Details:
-
💥 Separate Youth (6-15) and adults (16+)
-
✅ Access to designated training zones
-
✅ Staff present for safety and supervision
-
⏱ 2-hour, 1-hour or Unlimited options available
-
🎯 Ideal for independent training or skill progression
Note:
No formal coaching provided during Open Gym. Waiver required prior to participation.
30
Thursday
Parkour Jam
Deren Perez CanceledParkour Jam
Parkour Jam
Freestyle, flow, and have fun! Experiment with moves, test your skills, and connect with other movers in an open, supportive session. Bring your creativity and flow to the obstacles! Parkour Jam is an open, unstructured session where participants of all levels can practice, experiment, and share moves in a supportive, energetic environment. Connect with others, test your skills, and have fun moving freely.
Skills Lab
31
Friday
Youth Novice (L1-3)
Joann Salas CanceledYouth Novice (L1-3)
Youth Novice Ninja (Ages 6–10)
Introductory-level class designed for beginner ninjas.
This class focuses on developing coordination, balance, strength, and confidence through fun and safe obstacle challenges. Perfect for first-timers or younger athletes learning the basics of Ninja Warrior-style movement. Each week includes skill progressions and age-appropriate drills that promote focus and body control.
🔹 No experience needed
🔹 Capped at 8-10 students per instructor for safety and engagement
Youth Advanced (L4-6)
Katrina Perez, Joann Salas CanceledYouth Advanced (L4-6)
Youth Advanced Ninja (Ages 11–15)
Progressive-level class for returning or older youth ninjas.
This class introduces more complex techniques, strength conditioning, and dynamic obstacles. Athletes build on foundational skills while working on grip strength, precision, and strategy. Suitable for students with prior ninja experience or athletic background in gymnastics, parkour, or climbing.
🔹 Coach approval or prior experience recommended
🔹 Focused on skill-building and competition prep
🔹 Capped at 10–12 students per instructor
Adult Ninja Class
Deren Perez CanceledAdult Ninja Class
Adult Ninja Warrior (Ages 16+)
All-levels class for adults from first-timers to advanced ninjas.
Whether you're just starting your ninja journey or training for competition, this class has something for you. We begin with fundamentals: bodyweight control, grip strength, obstacle basics, and safety techniques. As you progress, you'll take on more complex challenges like laches, warped walls, salmon ladders, and dynamic courses.
Coaches adjust for all levels and provide personal guidance based on ability. Build strength, confidence, and obstacle mastery at your pace — or get ready for the next Ninja competition.
🔹 Beginner-friendly & competition-prep ready
🔹 Modifications and progressions provided at every level
🔹 Great for fitness-focused adults or aspiring Ninja Warriors
Skills Lab
CanceledSkills Lab
Open Gym: Skill Progression
Level up your ninja skills at your own pace! This session is designed for members to practice techniques, refine movements, and progress through our signature “Level-Up” program. Whether you’re perfecting a tricky obstacle or building strength and confidence, our safe and supervised open gym environment lets you challenge yourself, track your progress, and improve your ninja skills.
1
Saturday
Påtgon Jiu Jitsu Workshop
Katrina Perez, Joann SalasPåtgon Jiu Jitsu Workshop
Partnering with Påtgon Jiu Jitsu (Ages 6-11)
This class focuses on developing coordination, balance, strength, and confidence through fun and safe obstacle challenges. Perfect for first-timers or younger athletes learning the basics of Ninja Warrior-style movement.
🔹 No experience needed
🔹 Closed-toe athletic shoes required (no crocs, cleats, hiking, or boots allowed)
🔹Bring water, we have waters for sale.
🔹 Capped at 8–10 students per instructor for safety and engagement
🔹Includes 1 hour open gym (12pm-1pm) to have fun and try out the course with the techniques taught during class.
Påtgon Jiu Jitsu Workshop
Katrina Perez, Joann SalasPåtgon Jiu Jitsu Workshop
Partnering with Påtgon Jiu Jitsu (Ages 12-16)
This class focuses on developing coordination, balance, strength, and confidence through fun and safe obstacle challenges. Perfect for first-timers or younger athletes learning the basics of Ninja Warrior-style movement.
🔹 No experience needed
🔹 Closed-toe athletic shoes required (no crocs, cleats, hiking, or boots allowed)
🔹Bring water, we have waters for sale.
🔹 Capped at 8–10 students per instructor for safety and engagement
🔹Includes 1 hour open gym (12pm-1pm) to have fun and try out the course with the techniques taught during class.
Birthday Party
Birthday Party
Celebrate like a Ninja!
Make your child’s birthday unforgettable with our action-packed Ninja party experience. This private 2-hour celebration includes obstacle-filled fun, exclusive use of our Ninja Zone, and a fully equipped party room.
🎂 Package Includes – 0:
-
🎟 Admission for up to 10 kids (ages 6-15 recommended)
-
🧗♂️ 80 minutes of exclusive access to our Youth Ninja Zone
-
🎉 40 minutes in your private party room to celebrate
-
🍽 Plates, cups, utensils & napkins included
-
🎁 Free Sindalu Ninja T-shirt for the birthday child
-
🎟 Free trial class for the birthday child to come back and train
-
🪑 Tables & chairs provided
-
🕒 extra time for set/clean up(15 min setup + 15 min cleanup before/after party)
🧑🤝🧑 Room holds up to 15-20 kids max. Adults may hang out in the party room at no extra charge.
📏 (Party room dimensions: 20ft x 14ft. Space is limited — seating not guaranteed for all adults.)
➕ Recommended Add-Ons
| Add-On | Description | Price Recommendation |
|---|---|---|
| Extra Child | Admission for 1 more child (beyond 10) | /child |
| Party Host | 1 staff-led mini “ninja challenge” (30–45 min) | |
| Set-Up & Clean-Up | Let us do the setup and cleanup! | |
| Extended Time | +30 extra minutes (on course) |
Birthday Party
Birthday Party
Celebrate like a Ninja!
Make your child’s birthday unforgettable with our action-packed Ninja party experience. This private 2-hour celebration includes obstacle-filled fun, exclusive use of our Ninja Zone, and a fully equipped party room.
🎂 Package Includes – 0:
-
🎟 Admission for up to 10 kids (ages 6-15 recommended)
-
🧗♂️ 80 minutes of exclusive access to our Youth Ninja Zone
-
🎉 40 minutes in your private party room to celebrate
-
🍽 Plates, cups, utensils & napkins included
-
🎁 Free Sindalu Ninja T-shirt for the birthday child
-
🎟 Free trial class for the birthday child to come back and train
-
🪑 Tables & chairs provided
-
🕒 extra time for set/clean up(15 min setup + 15 min cleanup before/after party)
🧑🤝🧑 Room holds up to 15-20 kids max. Adults may hang out in the party room at no extra charge.
📏 (Party room dimensions: 20ft x 14ft. Space is limited — seating not guaranteed for all adults.)
➕ Recommended Add-Ons
| Add-On | Description | Price Recommendation |
|---|---|---|
| Extra Child | Admission for 1 more child (beyond 10) | /child |
| Party Host | 1 staff-led mini “ninja challenge” (30–45 min) | |
| Set-Up & Clean-Up | Let us do the setup and cleanup! | |
| Extended Time | +30 extra minutes (on course) |
Birthday Party
Birthday Party
Celebrate like a Ninja!
Make your child’s birthday unforgettable with our action-packed Ninja party experience. This private 2-hour celebration includes obstacle-filled fun, exclusive use of our Ninja Zone, and a fully equipped party room.
🎂 Package Includes – 0:
-
🎟 Admission for up to 10 kids (ages 6-15 recommended)
-
🧗♂️ 80 minutes of exclusive access to our Youth Ninja Zone
-
🎉 40 minutes in your private party room to celebrate
-
🍽 Plates, cups, utensils & napkins included
-
🎁 Free Sindalu Ninja T-shirt for the birthday child
-
🎟 Free trial class for the birthday child to come back and train
-
🪑 Tables & chairs provided
-
🕒 extra time for set/clean up(15 min setup + 15 min cleanup before/after party)
🧑🤝🧑 Room holds up to 15-20 kids max. Adults may hang out in the party room at no extra charge.
📏 (Party room dimensions: 20ft x 14ft. Space is limited — seating not guaranteed for all adults.)
➕ Recommended Add-Ons
| Add-On | Description | Price Recommendation |
|---|---|---|
| Extra Child | Admission for 1 more child (beyond 10) | /child |
| Party Host | 1 staff-led mini “ninja challenge” (30–45 min) | |
| Set-Up & Clean-Up | Let us do the setup and cleanup! | |
| Extended Time | +30 extra minutes (on course) |
Booking Confirmed
We look forward to seeing you soon!
Please let us know ahead of time if you are not able to make your scheduled time.
Added to waitlist
You are now on the waitlist. If a spot opens up we will notify you via Email.