Enjoy a wonderful winter run and celebrate Mardi Gras in true Colorado form at the 9th annual Mardi Crawl, benefiting Firefly Autism! From the award-winning Apex Center, you'll have the chance to tackle relatively gentle 5K, 10K, and half marathon courses that go along the acclaimed Ralston Creek Trail, taking you through shady, creekside beaty along Arvada's picturesque open spaces and charming golf course communities. This event, paired with its Endless Series' counterparts Summer Breeze and Runapalooza, offers a can't-miss opportunity to experience the best of what Colorado has to offer!