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ULTIMATE NINJAS Chesterfield
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Gym Schedule

Ultimate Ninjas Chesterfield

Open Play

Drop in, swing around, head home tired.

Open play is the simple version: bring the kids, let them move and use the gym without committing to a weekly class.

This week's drop-in times

Fri

5pm – 6pm

Sat

11am – 12pm

Sun

11am – 12pm

Tue/Thu

Lil Ninjas open gym at 11:30am

Child discovers the joy of obstacles swinging on ninja loop

For ages 6 and up

Open Gym gives kids and adults room to explore obstacles at their own pace.

What to bring

Water, socks if needed, and clothes that can handle climbing.

How it works

Arrive, check in, review safety expectations, then play.

Best for

Rainy days, weekend energy, sibling groups, and first-time visitors.

Typical session

60 min

Age range

6+

Parent job

Watch

Kid job

Move

Frequently Asked Questions

Open Gym FAQ

Good to know before you go.

Quick rules first, then the questions parents usually check before booking Open Gym at Chesterfield.

Age

Open Gym is for ages 6 and up

Shoes

Close-toed shoes are required

Waiver

Complete the waiver before using the course

What is Open Gym?

Open Gym is unstructured free-roam time on the full obstacle course. There are no coaches directing activities, so participants can explore at their own pace, practice skills, or move with friends and family.

Do I need to book Open Gym in advance?

Reservations are strongly recommended because sessions have capacity limits. Walk-ins are welcome when space is available, but booking online guarantees your spot.

What ages is Open Gym for?

Chesterfield Open Gym is for participants age 6 and up. Younger children may have separate Lil Ninjas options when those sessions appear on the schedule.

Can adults participate?

Yes. Adults are welcome to participate in Open Gym. Adults accompanying children should actively supervise them on the course at all times.

What obstacles are available during Open Gym?

The full course is available during Open Gym, including the warped wall, monkey bars, rope swing, quad steps, climbing walls, ring travel, and more. Availability may vary by session type.

How long is each Open Gym session?

Sessions are typically 60–90 minutes. Specific session lengths are listed when booking, and once a session ends the facility resets for the next group.

Find a class that fits your week.

Consistent class blocks make it easier to plan around school, weekends, and party time.

Kids Classes

Mon, Tues 12:30pm, 4:30pm, 5:30pm, 6:30pm
Wed 9:00am, 4:30pm, 5:30pm, 6:30pm
Thu 12:30pm, 4:30pm, 5:30pm, 6:30pm
Fri 9:00am, 12:30pm, 4:30pm, 5:30pm

Kids Birthday Parties

Sat 12:40pm – 7:20pm
Sun 12:00pm – 7:20pm

Open Gym

Fri 6:30pm
Sat 10:00am, 11:00am
Sun 10:00am – 11:00am
This Location
Ultimate Ninjas
140 Long Road, Suite 130
Chesterfield, MO 63005
(636) 206-8550 chesterfield@ultimateninjas.com Get Directions →