Miller Activity Complex (MAC)

The Miller Activity Complex (MAC) is Castle Rock's state-of-the-art recreation center, located within Philip S. Miller Park. This 64,443 square foot, two-story facility offers year-round fitness, sports, and recreation opportunities for all ages and abilities.

Fitness Center

The modern fitness center features top-of-the-line cardio and strength equipment, free weights, and functional training areas. Large windows offer inspiring views of the park and mountains while you work out.

Indoor Track

A cushioned indoor walking/jogging track wraps around the upper level, perfect for year-round training regardless of weather.

Gymnasium

Full-size gymnasium for basketball, volleyball, pickleball, and other court sports. Open gym times available along with organized leagues and programs.

Climbing Wall

Test your skills on the indoor climbing wall, suitable for beginners through advanced climbers. Equipment and instruction available.

Programs & Classes

• Group fitness classes (yoga, spin, HIIT, and more)
• Personal training
• Youth sports programs
• Senior fitness programs
• Swim lessons (at connected aquatic facility)

Membership & Day Passes

Flexible options including day passes, monthly memberships, and annual passes. Castle Rock residents receive discounted rates.