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Rio Grande 100

South Fork, United States • 23 Aug 2025

The Rio Grande 100 is an exhilarating ultramarathon set in South Fork, Colorado, featuring a challenging course that traverses the stunning La Garita mountains. Runners will experience diverse terrains, from arid forests to alpine tundra, with elevations exceeding 12,000 feet. The event is known for its scenic trails adorned with golden aspen leaves and rocky paths. Emphasizing safety, the organizers have implemented measures to ensure the race can proceed even in adverse weather conditions, as seen in previous years. The Rio Grande 100 promises a rewarding experience for both participants and their support crews, embodying a fun and relaxed race atmosphere. Visit the organization's website for the most recent information.

United States Colorado South Fork

Race information

Website Registration
100 mi
100 Miles
Visit the organization's website for the most recent information.
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