Guma i Sindalu Siha, LLC

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"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 Journey
Complete your waiver here

By 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

August events

  • Members Night (Aug 7): Board Game Night

  • Skills Testing (Aug 21): Track progress and level up

  • Quarterly Competition (Aug 29): Gain experience and earn your rankings

  • 🎲 Members Night – June 12

    Board Game Night — Connect & Compete

    • Join us for a fun, casual Members Board Game Night at the gym.
      • Play your favorite games: Choose from classics or modern tabletop hits.
      • Team up or face off: Challenge your friends and teammates.
      • Bring your own favorite: Feel free to share a game you love.
      • A perfect night: Relax, show your competitive spirit, and connect.

📈 Skills Testing – June 26

Track Progress. Build Confidence. Level Up.

Our monthly Skills Testing helps athletes:

🌍 Quarterly Competition — Aug 29

Whether you want to try ninja for the very first time or you are ready to climb the rankings, our next event is for you!
  • First-Timers: Discover the thrill of the sport, challenge yourself, and experience a supportive community.
  • Returning Athletes: Conquer new obstacles, earn crucial ranking points, and push closer to national team selection.
Event Details
  • Date: Saturday, June 6
  • Location: Guma i Sindalu Siha Ninja Gym
  • Times: 1–3 PM (Ages 6–13) │ 5–8 PM (Ages 14–60+)
Spaces fill up fast. Sign up today and show what you can do!


Sign up for the August Ninja Competiton

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.

Frequently Asked Questions

Check out the most frequently asked questions about Guma i Sindalu Siha, LLC.


Still haven't found the answer?

Contact Us

Is there an age requirement?

Our gym is open to athletes ages 6 and up (seperate youth and Adult Classes). 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 6–15)

    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 16+), 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 or practice skills. 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), no crocs, slides, hiking, cleats, steel toe, etc. allowed. Bring lots of water, while we do not have a water refill station, we have bottled water for purchase for your convenience. Outside food can't be consumed on the gym floor.

What’s your cancellation and no-show policy?

Please cancel at least 6 hours before your class to avoid penalties. No-shows or late cancels may result in a fee and a loss of a session.

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 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 weight training zones and to make sure hands are clean before getting back on the obstacles.

 

Schedule

Schedule

08/09/2026 - 08/15/2026
9 Sun 10 Mon 11 Tue 12 Wed 13 Thu 14 Fri 15 Sat
9 Sun Closed
10 Mon Closed
11 Tue Closed
12 Wed Closed
13 Thu Closed
14 Fri Closed
15 Sat Closed
12:00am
1:00am
2:00am
3:00am
4:00am
5:00am
6:00am
7:00am
8:00am
9:00am
10:00am
11:00am
12:00pm
1:00pm
2:00pm
3:00pm
4:00pm
5:00pm
6:00pm
7:00pm
8:00pm
9:00pm
10:00pm
11:00pm

Youth Novice (Lv. 1-2)

4:30 - 5:30pm
4:30pm - 5:30pm

Youth Novice (Lv. 1-2)

DPDeren Perez JSJoann Salas Deren, Joann
Youth Novice (Lv. 1-2)
Monday, August 10 · 4:30pm - 5:30pm
Instructors:
Deren Perez Joann Salas

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

IMPORTANT: Please use participants name when booking

This day is marked as closed. Reopen the day to edit or restore sessions.

Youth Advanced (Lv. 3-6)

5:30 - 6:30pm
5:30pm - 6:30pm

Youth Advanced (Lv. 3-6)

DPDeren Perez JSJoann Salas Deren, Joann
Youth Advanced (Lv. 3-6)
Monday, August 10 · 5:30pm - 6:30pm
Instructors:
Deren Perez Joann Salas

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

IMPORTANT: Please use participants name when booking

This day is marked as closed. Reopen the day to edit or restore sessions.

Ninja Fit

6:30 - 7:30pm
6:30pm - 7:30pm

Ninja Fit

DPDeren Perez
Ninja Fit
Monday, August 10 · 6:30pm - 7:30pm
Instructors:
Deren Perez

Ninja Fit (Ages 16+)

Strength & conditioning designed specifically for Ninja Warrior training.

Ninja Fit is a semi-private group workout built to develop the strength, endurance, and grip needed to conquer ninja obstacles. Whether you're new to fitness or looking to level up your performance, this class focuses on functional movements that directly translate to success on the course.

Expect a mix of bodyweight training, grip work, core stability, explosive power, and conditioning circuits—all programmed with ninja athletes in mind. Workouts are scalable, so beginners can build a solid foundation while experienced athletes push their limits.

This is where you build the engine behind your ninja skills.

🔹 All fitness levels welcome
🔹 Focused on strength, endurance, and injury prevention
🔹 Perfect complement to Ninja classes or OCR training
🔹 Semi-private setting for more coaching and attention

This day is marked as closed. Reopen the day to edit or restore sessions.

Skills Lab

7:30 - 9pm
7:30pm - 9:00pm

Skills Lab

Skills Lab
Monday, August 10 · 7:30pm - 9:00pm

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.

IMPORTANT: Please use participants name when booking

This day is marked as closed. Reopen the day to edit or restore sessions.

Youth Novice (Lv. 1-2)

4:30 - 5:30pm 2 / 20
4:30pm - 5:30pm

Youth Novice (Lv. 1-2)

Bookings: 2/20
JSJoann Salas Book
Youth Novice (Lv. 1-2)
Tuesday, August 11 · 4:30pm - 5:30pm
Instructors:
Joann Salas

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

👟 Non-marking tennis shoes with laces are required.

(Strict no slip on shoes policy will be enforced)

This day is marked as closed. Reopen the day to edit or restore sessions.

Youth Advanced (Lv. 3-6)

5:30 - 6:30pm 0 / 20
5:30pm - 6:30pm

Youth Advanced (Lv. 3-6)

Bookings: 0/20
JSJoann Salas Book
Youth Advanced (Lv. 3-6)
Tuesday, August 11 · 5:30pm - 6:30pm
Instructors:
Joann Salas

Youth Advanced Ninja (Ages 10–15)

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

This day is marked as closed. Reopen the day to edit or restore sessions.

Skills Lab

7:30 - 9pm 0 / 20
7:30pm - 9:00pm

Skills Lab

Bookings: 0/20
Book
Skills Lab
Tuesday, August 11 · 7:30pm - 9:00pm

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.

IMPORTANT: Please use participants name when booking

This day is marked as closed. Reopen the day to edit or restore sessions.

Youth Novice (Lv. 1-2)

4:30 - 5:30pm 1 / 20
4:30pm - 5:30pm

Youth Novice (Lv. 1-2)

Bookings: 1/20
DPDeren Perez JSJoann Salas Deren, Joann Book
Youth Novice (Lv. 1-2)
Wednesday, August 12 · 4:30pm - 5:30pm
Instructors:
Deren Perez Joann Salas

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

This day is marked as closed. Reopen the day to edit or restore sessions.

Youth Advanced (Lv. 3-6)

5:30 - 6:30pm 0 / 20
5:30pm - 6:30pm

Youth Advanced (Lv. 3-6)

Bookings: 0/20
DPDeren Perez JSJoann Salas Deren, Joann Book
Youth Advanced (Lv. 3-6)
Wednesday, August 12 · 5:30pm - 6:30pm
Instructors:
Deren Perez Joann Salas

Youth Advanced Ninja (Ages 10–15)

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

This day is marked as closed. Reopen the day to edit or restore sessions.

Ninja Fit

6:30 - 7:30pm 0 / 12
6:30pm - 7:30pm

Ninja Fit

Bookings: 0/12
DPDeren Perez Book
Ninja Fit
Wednesday, August 12 · 6:30pm - 7:30pm
Instructors:
Deren Perez

Ninja Fit (Ages 16+)

Strength & conditioning designed specifically for Ninja Warrior training.

Ninja Fit is a semi-private group workout built to develop the strength, endurance, and grip needed to conquer ninja obstacles. Whether you're new to fitness or looking to level up your performance, this class focuses on functional movements that directly translate to success on the course.

Expect a mix of bodyweight training, grip work, core stability, explosive power, and conditioning circuits—all programmed with ninja athletes in mind. Workouts are scalable, so beginners can build a solid foundation while experienced athletes push their limits.

This is where you build the engine behind your ninja skills.

🔹 All fitness levels welcome
🔹 Focused on strength, endurance, and injury prevention
🔹 Perfect complement to Ninja classes or OCR training
🔹 Semi-private setting for more coaching and attention

This day is marked as closed. Reopen the day to edit or restore sessions.

Skills Lab

7:30 - 9pm 0 / 20
7:30pm - 9:00pm

Skills Lab

Bookings: 0/20
Book
Skills Lab
Wednesday, August 12 · 7:30pm - 9:00pm

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.

IMPORTANT: Please use participants name when booking

This day is marked as closed. Reopen the day to edit or restore sessions.

Closed

4 - 9pm
4:00pm - 9:00pm

Closed

Closed
Thursday, August 13 · 4:00pm - 9:00pm

This day is marked as closed. Reopen the day to edit or restore sessions.

Youth Novice (Lv. 1-2)

4:30 - 5:30pm 0 / 20
4:30pm - 5:30pm

Youth Novice (Lv. 1-2)

Bookings: 0/20
KPKatrina Perez JSJoann Salas Katrina, Joann Book
Youth Novice (Lv. 1-2)
Friday, August 14 · 4:30pm - 5:30pm
Instructors:
Katrina Perez Joann Salas

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

This day is marked as closed. Reopen the day to edit or restore sessions.

Youth Advanced (Lv. 3-6)

5:30 - 6:30pm 1 / 20
5:30pm - 6:30pm

Youth Advanced (Lv. 3-6)

Bookings: 1/20
DPDeren Perez JSJoann Salas Deren, Joann Book
Youth Advanced (Lv. 3-6)
Friday, August 14 · 5:30pm - 6:30pm
Instructors:
Deren Perez Joann Salas

Youth Advanced Ninja (Ages 10–15)

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

This day is marked as closed. Reopen the day to edit or restore sessions.

Adult Ninja Class

6:30 - 7:30pm 1 / 12
6:30pm - 7:30pm

Adult Ninja Class

Bookings: 1/12
DPDeren Perez Book
Adult Ninja Class
Friday, August 14 · 6:30pm - 7:30pm
Instructors:
Deren Perez

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

This day is marked as closed. Reopen the day to edit or restore sessions.

Skills Lab

7:30 - 9pm 0 / 20
7:30pm - 9:00pm

Skills Lab

Bookings: 0/20
Book
Skills Lab
Friday, August 14 · 7:30pm - 9:00pm

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.

IMPORTANT: Please use participants name when booking

This day is marked as closed. Reopen the day to edit or restore sessions.

Open Gym

12 - 6pm 0 / 50
12:00pm - 6:00pm

Open Gym

Bookings: 0/50
Book
Open Gym
Saturday, August 15 · 12:00pm - 6:00pm

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 time limit

  • 🎯 Ideal for independent training or skill progression

Note:
No formal coaching provided during Open Gym. Waiver required prior to participation

This day is marked as closed. Reopen the day to edit or restore sessions.

Adult Course runs

6 - 9pm 0 / 20
6:00pm - 9:00pm

Adult Course runs

Bookings: 0/20
DPDeren Perez Book
Adult Course runs
Saturday, August 15 · 6:00pm - 9:00pm
Instructors:
Deren Perez

Adult Course Run Nights – Train Like a Pro

Put your skills to the test on a full-length ninja course designed for teens and adults. Adult Course Run Nights are structured but self-driven sessions focused on flowing through obstacles, building endurance, and preparing for competitions.

Details:

✅ Access to a designated adult-level ninja course
✅ Course resets and flow-focused training
✅ No formal coaching — self-paced runs encouraged
✅ Staff present for safety and course management

📍 Recommended for ages 15+ 
Duration: 4 hours of course runs and good vibes

Important:
Participants must have a signed waiver on file. This session is intended for experienced youth and adult athletes. No open gym during this time.

This day is marked as closed. Reopen the day to edit or restore sessions.

No sessions found