Loop through Colorado's gold rush ghost towns on the historic Switzerland Trail
Other trail races within 38 miles
A 28-kilometer loop through Boulder County's historic mining country, starting and finishing at the Gold Hill Inn. The course winds south to the town of Salina, west along Fourmile Canyon Drive to the ghost town of Sunset, then north along the historic Switzerland Trail narrow-gauge railway corridor back to Gold Hill. Dirt roads and forest trails through ponderosa pine and aspen create a scenic, moderately challenging route with sweeping Front Range views at around 8,500 ft elevation.
Gold Hill, CO, United StatesJune 21, 2026
Sunset Trail Running Festival 28K is a loop trail race in Gold Hill, CO, United States, held on June 21, 2026. The course covers 17.4 miles and climbs 4,490 ft.
| Location | Mile | Elevation | Cutoff |
|---|---|---|---|
Start Start | 0.0 | 8,268 ft | — |
Finish Finish | 17.4 | 8,268 ft | — |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
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Race day falls on the summer solstice weekend at around 8,500 ft in Colorado's Front Range mountains. Morning start temperatures (7:30 AM) are typically cool at 45–55°F, warming to the low 70s°F by late morning. Colorado's afternoon thunderstorm pattern typically arrives after noon, but most runners finish well before then. UV exposure is significant at altitude on clear June mornings—sunscreen is recommended.
Colorado afternoon thunderstorms are common in June; slower 28K finishers may encounter building clouds by late morning
Strong UV exposure at 8,500 ft on exposed dirt roads; sunscreen and sun protection recommended
No required gear specified
No recommended gear specified
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