Arapahoe Y Facility Notice: Basketball gym and group exercise studio will be closed 8am-10pm, Sept 19-23. The Spirit, Mind, Body Studio will be closed 8am-10pm, Sept 20-24. Locker rooms will be closed all day, Sept 21-22. Stairway closed Sept 19, 7-10pm.


The 30,000-square-foot Mapleton YMCA in the heart of Boulder, Colo., has been in operation for 52 years. The YMCA in Boulder serves as a gym, fitness center and recreation facility for members and the community. 


Fitness Center With Cardio and Strength Training Equipment and Weight Room

Basketball Gym

Indoor Running Track

Cycling Studio

Pilates Reformer Studio

Group Exercise Studio

Indoor Lap Pool

Outdoor Splash Park (seasonal)

Racquetball Court


Dry Sauna (women’s and men’s locker rooms)

Hot Tub (for ages 16+)

Mapleton Y

2850 Mapleton Avenue
Boulder, CO 80301

Mapleton Y Hours

Mon-Fri: 5:00am-10:00pm
Sat: 6:45am-8:00pm
Sun: 8:00am-8:00pm

Holiday/Event Hours

Mapleton Y Pool Hours

Mon-Fri: 5:00am-9:45pm
Sat: 6:45am-7:45pm
Sun: 8:00am-7:45pm

Pool Schedule

Mapleton Y Child Watch Hours

Mon-Thu: 8:00am-2:00pm and 5:00-8:00pm
Fri-Sat: 8:00am-2:00pm
Sun: 8:30am-Noon