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Miller Activity Complex

The Miller Activity Complex in Castle Rock is truly a catch-all for fun-seekers and families alike. Voted “Best of the Best for Family Entertainment” by Colorado Community Media in 2019, the Miller Activity Complex, or MAC for short is the perfect venue for a multitude of events promoting an active lifestyle. The 64,443 square foot facility resides within the 300-acre Phillip S. Miller Park. It offers endless ways to entertain, engage, and exercise with members of the family and friends. This crown of Castle Rock is a must-experience for visitors and a favorite for locals, guaranteed to lead to hours of thrill.


The Miller Activity Complex features two full-sized basketball courts that can be reconfigured into four volleyball courts, an indoor turf field that can host a variety of sports such as soccer, lacrosse, and flag football, an 18-hole bouldering cave, an eight-lane 25-meter lap pool with two one-meter diving boards and a separate leisure pool with a current channel, lane ropes, water spray features, bubblers and a trampoline area with 16 trampoline beds. The MAC also has an elevated track overlooking the indoor turf field. Visitors can take their pick of cardio equipment, free weights, and circuit training machines in the 4,000 square foot workout area. If you require some recovery time after all that activity, stop by the on-site physical therapy clinic or take advantage of the full-service locker rooms complete with showers, saunas, and day lockers. It’s easy to see from the vast array of options that everyone will be able to find something to love about the MAC. 


The Miller Activity Complex is more than just a gym and recreation center, it’s also a popular event space. The MAC has hosted various volleyball tournaments, basketball camps, martial arts competitions, trade shows, and so much more. The 35-foot ceilings in the main hall can accommodate up to 1,200 people for seated events or 800 people for banquet-style seating. The versatile event spaces can be transformed to fit any need whether it’s a business conference, black-tie gala, or casual family reunion. Along with the aforementioned features, visitors can find two party rooms perfect for hosting birthday parties in a wonderfully fun and active venue, meeting rooms, a lounge room with a fireplace, LEGO table, and train table, and internet access to stay connected.


No matter what time of year it is, the Miller Activity Complex has something to offer everyone in the family. In the summer, take a dip in the outdoor aquatics center which features two 50-meter pools, a lazy river, two slides, and a splash pad. The kids will love the zero-depth entry pool with water geysers, shooting hoops on the basketball courts, or running through one of the many playgrounds available. The facility also offers specialty fitness classes like Power Hour Boot Camp and Fit Moms. Bringing technology into play, the Miller Activity Complex also includes BEAM interactive floor games, and a projector system that puts a new twist on an old way to have fun.


The Miller Activity Complex is more than just a recreation center, it’s a community gathering place that offers endless opportunities for fun, exercise, and relaxation. With top-notch facilities, a variety of events and activities, and a convenient location, the MAC is a must-go for anyone looking to enjoy all that Castle Rock, CO has to offer.

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