MAC Leisure Pool

The Miller Activity Complex Pool boasts an impressive indoor aquatics center with four lap lanes, a winding water slide, a zero-entry section with smaller slide and water table, and a vortex whirlpool that simulates rushing water currents.

The pool area also has four garage doors that open to an outdoor pool deck where users can enjoy the outdoor Castle Rock weather.

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The MAC Pool is now open. Reservations for can be made two days in advance for a 90-minute session. 

  • Capacity is limited, see registration page for current capacity.
  • Limited seating is available. 
  • No tables are available
  • Limited lockers are available for use, showers are available for swimmers to rinse off
  • Please arrive with your swim suit on and be prepared to leave the facility in your swim suit.

Fees and admission

Daily admissionResidentNonresident
Youth (ages 1-17)$6$7
Adult (ages 18 and up)$7$8
Senior (ages 62 and up)$6$7

Rules and regulations

Children under the age of 8 must have a paying adult with them in the pool.  


You must be at least 48 inches tall to ride the slides.

Safety breaks

The leisure pool has mandatory 15-minute safety breaks every two hours. The safety break is designed to give kids an opportunity to calm down and acknowledge their fatigue level, use the restroom and get a break from the possible ongoing ingestion of pool water. This helps to reduce the number of incidents a lifeguard needs to respond to as well as fecal accident and vomit closures. Safety breaks start 15 minutes prior to even-numbered hours of the day, and occur every 2 hours thereafter. 


Our pool capacity is 412 persons. You may want to call first to see if the pool is at capacity before visiting, 720-733-2222.

Food and drinks

Food is allowed in the pool area, but glass containers are not. Vending machines are available in the pool area.