Miller Activity Complex (MAC)

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We are pleased to present the crowning jewel of the more than 300-acre Philip S. Miller Park. The Miller Activity Complex (MAC) is the Town's newest 64,443 square foot, two story recreational facility. Come explore the unique activities this facility offers.


Age requirements

All guests 11 years and younger must be accompanied by a guardian at least 15 years of age and older, at all times, to utilize the facility.

Additional amenities

  1. Batting cages
  2. Functional fitness area
  3. Trampolines

Batting cage admission

Field Number 2 has cages that can be lowered down providing two bays for batting practice. To reserve the batting cage area, you must rent the half turf, field Number 2.  For rentals needed during the current month, please visit our Quick Group Rentals page. If you want to book a time after the current month, please fill out our Rental Request form.


  1. Daily admission
  2. Multi-visit pass*
  3. Annual membership
MAC admission only. Trampoline and batting cages are not included.
Daily admission Resident discount rate Standard
Youth (ages 1 to 17) $7.50 $8.50
Adult (ages 18 and up) $8.50 $9.50
Senior (ages 62 and up) $7.50 $8.50

To request changes, cancellations or holds on your existing pass, please complete the MAC/REC pass change form. Please note, passes and memberships are only valid at the facility for which they are purchased. The MAC and the Recreation Center have separate passes and memberships.

Resident discount rate

This program offers a resident discount rate to individuals and families verified to be paying taxes to the Town of Castle Rock. If you just created an account or are registering a dependent you just added to your account, please send or bring in proof of residency as outlined on the State of Colorado Department of Revenue webpage to have your account reviewed to qualify for this discount.  If you qualify and your account is updated, resident discounts in any of our offerings, in which the resident discount is offered, will automatically be applied. Account updates may take up to one business day to process. Refunds will not be provided retroactively to registrations made prior to an account update to discount eligibility. 

More information

The fees collected for participation in activities and admission at the MAC allow the facility to remain sustainable and meet Town expectations for the recovery of 100 of operating costs.

The MAC also offers group rates for large groups such as schools, daycare centers or day camps. For information and pricing call Amelia at 720-733-2245.

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