Reservations are required for independent workouts. ReserveOur Ys are open with temporarily reduced hours. Please check our reopening guide for policies before you arrive.


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, Longmont and Johnstown.

COVID Refund and Credit Policy for Y Programs (Effective 11/4/2020)

The COVID Refund and Credit Policy for Y Programs supersedes the YMCA of Northern Colorado’s existing refund/credit policy. This policy applies to registration in the following programs: Health/Fitness, Sports, Aquatics, Ice, Preschool, Youth and Teen Programs and Adult Programs. This policy does not apply to Y membership or YMCA Camp Santa Maria.


Lap swim (for ages 12+), open swim, family swim and water exercise classes are available by reservation only. Open and family swim resume on Jan 18.

Please review our reopening guide so you know what to expect.

Arapahoe YMCA Pool Hours

Temporarily reduced hours

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

Pool Schedule

Ed & Ruth Lehman YMCA Pool Hours

Temporarily reduced hours

Mon-Fri: 5:00am-Noon & 3:00pm-6:45pm
Sat: 6:45am-1:45pm
Sun: 8:00am-1:45pm

Pool Schedule

Mapleton YMCA Pool Hours

The pool is only open for water exercise classes and swim lessons at this time. Hours vary.

Pool Schedule

Johnstown Community YMCA Pool Hours

Temporarily reduced hours

Mon-Fri: 5:00am-8:15pm
Sat: 7:00am-6:45pm
Sun: 8:00am-6:45pm

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 for ages 6 month to adult. Join us for swim lessons at our swimming pools in Boulder, Lafayette, Longmont and Johnstown.

The YMCA of Northern Colorado is part of the USA Swimming Foundation which strives to ensure that every child has the opportunity to start their own journey to be safer in, on and around the water. 

USA Swimming Foundation


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.



303-443-4474 ext. 3500
Email Aquatics