CLOSURE UPDATE: Per mandate from Governor Polis, and because it is the right thing to do, our facilities are closed. Check here for COVID-19 updates. We are running emergency childcare only for families who have no other choice.


From classes to lap swimming to good old fashioned open swim, the YMCA of Northern Colorado provides aquatic opportunities, safety-focused instruction and family friendly activities at our pools in Boulder, Lafayette and Longmont. 

Arapahoe Y Pool Hours

Mon-Fri: 5:30am-9:00pm
Sat: 6:45am-7:45pm
Sun: 8:00am-6:00pm

Pool Schedule

Ed & Ruth Lehman Y Pool Hours

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

Pool Schedule

Mapleton Y Pool Hours

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

Pool Schedule


The YMCA is the nation’s leading expert in water safety and swim instruction. Along with Ys across the country, we have adopted a swim lesson curriculum that makes it easier for children and adults to become comfortable and safe in and around water. YMCA Swim Lessons begin with the development of basic self rescue skills as well as gaining confidence and ease in the water. From there, swimmers refine the strokes they have learned and progress their skills. The new lessons also include character development, family involvement and safety education components.

The YMCA offers swim lessons for all skills levels throughout Boulder County for ages 6 month to adult. Join us for swim lessons at our swimming pools in Boulder, Lafayette and Longmont. 


The YMCA Safety Around Water Program, supported by a YMCA of the USA grant, allows the YMCA of Northern Colorado to offer free water safety lessons to hundreds of local children. Kids from local school districts, as well as the Head Start program, come to the Y for lessons to develop water safety, water confidence and self-rescue skills.


Aquatics Department

303-443-4474 ext. 5500
Email the Aquatics Department