Rio Grande 100
South Fork, United States • 23 Aug 2025
The Rio Grande 100 is an exhilarating ultramarathon set in the stunning La Garita mountains of South Fork, Colorado. This challenging race features a course that starts and finishes along the banks of the Rio Grande River, taking participants through diverse terrains, including arid forests and alpine tundra, with elevations exceeding 12,000 feet. Known for its beautiful trails adorned with golden aspen leaves, the event fosters a relaxed atmosphere for both racers and their crews. The organizers prioritize safety, implementing measures to ensure the race can proceed even in adverse weather conditions, making it a memorable experience for all involved. Visit the organization's website for the most recent information.