Marathon at the MAC
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Marathon at the MAC
The Marathon at the MAC is a singletrack trail race held at the Miller Activity Complex in Castle Rock, Colorado on November 7, 2026. The event uses the park's trail network and features rolling terrain, valleys, hills, and sweeping views of the surrounding landscape.
Distances
- 5K: trail 5K course.
- Half Marathon: 13.1 miles on singletrack trails.
- Marathon: 26.2 miles through the MAC trail network.
The courses are routed on singletrack trails that run through natural open space and varied terrain within the park. The half marathon and marathon share a mapped route through the MAC trail network.
Every participant receives a custom t-shirt and finisher socks from Sock Guy. Base entry fees listed are $40 for the 5K, $90 for the half marathon, and $105 for the marathon. Prices increase after July 31 to $50 for the 5K, $105 for the half marathon, and $125 for the marathon. Visit the organization's website for the most recent information.
