Mardi Crawl

The All-Out Mardi Crawl is a festive running event held annually at the Apex Center in Arvada, Colorado. Celebrating its 10th year in 2026, the race offers 5K, 10K, and half marathon distances, including virtual options for each. The courses are relatively gentle and scenic, following the Ralston Creek Trail through shaded, creekside areas and picturesque golf course communities.

The event is known for its welcoming atmosphere and is an official qualifier for the BOLDERBoulder 10K race. It is part of the Endless Series, alongside the Summer Breeze and Runapalooza events, showcasing the best of Colorado's outdoor running experiences. Visit the organization's website for the most recent information.