When
Jul 25, 2026
Starts at 6:00am MDT
Weather
Forecast
🌦️ Showers · 15°C–30°C
· 56% · Wind 17 km/h
Registration
Open Now
Closes July 25, 2026 · 11:59 PM MDT
Website
Official website →
Event Details
A Boston Marathon Qualifier featuring a scenic course along the Rio Grande Trail, with a downhill elevation drop of 1,418 ft from start to finish.
Event type
Full-Marathon
Distance
42.2 km
Surface
Road
Registration opens
July 19, 2025 · 12:00 AM MDT
Registration closes
July 25, 2026 · 11:59 PM MDT
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