Colorado · Saturday, August 1, 2026
The Volcanic 50 is a running and trail running event held on Saturday, August 1, 2026.
🗺 Volcanic 50 is the must-attend sporting event to mark on your race calendar in the United States 🇺🇸 in Marble.
The Grin & Bear It is Crested Butte’s oldest trail challenge. Historically presented as a sprint to Green Lake and back, this classic event has evolved to offer a 25k Loop competition while still maintaining the traditional 15k race.
New in 2025, the Grin and Bear it BIKE! This route will follow the 25k run route, excluding the .7 miles to Green Lake and back. This challenging route is roughly 14.83 miles with just under 4k feet of climbing.
Note- there is minimal swag and no podium awards for this event.
The Audi Power of Four Trail Run offers runners a scenic mix of trails across the mountains of Aspen Snowmass. Registrants can choose between the 3 distances offered including 50K, 25K & 10K.