San Juan Softie
100 mile Ultra Marathon
August 15, 2025
Durango, CO
The softest 100 miler in the San Juans
This 100 mile ultra marathon starts and finishes just north of Durango, Colorado. The race will take you through some of the most stunning and rugged terrain with breathtaking views of the Colorado Trail, Engineer Mountain, Wilson group of 14ers, Lizard Head, and many other incredible peaks and valleys in this region.
With an average run elevation of 10,000′ feet, and 23,000’+ feet of vertical climbing, you’ll be challenged by steep ascents and descents, and possibly, variable weather conditions along your 100 mile trek.
38 hour cut-off
Start: 6am MT Friday August 15
Finish: 8pm MT Saturday August 16
Race Details
Packet Pick-Up:
Thursday, Aug 14, 2:00 PM – 6:00 PM MT @ Durango Running Company
Friday, Aug 15, 5:00 AM – 5:30 AM @ the starting line
Course
23k+ feet elevation change
Contact SJS
Have questions? Email us and someone will get back to you soon. We aim to respond promptly, but the SJS crew is a labor of love, so please exercise some patience.