

RunCO
Sunset Trail Running Festival
June 21, 2026 • Boulder, CO
Course Distances
28K
12K
5K
Youth
About this race
Join us on Sunday, June 21st, for the Sunset Trail Running Festival in Gold Hill, CO! Hosted by The Boulder Watershed Collective and in collaboration with T.E.A.M Boulder, all money raised from the event will be donated to the town of Gold Hill, and will fund wildfire preparation and response initiatives such as forest restoration, home hardening, emergency planning, land stewardship, and community resiliency.
This event provides an opportunity for the Front Range trail community, to show its support for small mountain town communities that live with a high risk of disruption and destruction from wildfire, while providing visitors with access to their unique character, beauty, and the surrounding landscapes.
RACE DETAILS Runners can choose between a 28K (17.4M), 12K (7.7M), 5K, or Kids 1K trail race. All distances start and finish on the main street of Gold Hill at the Gold Hill Inn, and the longer distances are run, in part, on the National Forest System roads. Runners will enjoy varied terrain of dirt roads and trails through ponderosa pine and aspen forests while taking in amazing views on these challenging courses.
The 28K course heads south to Salina, and then west along Fourmile Canyon Dr to the historic town of Sunset. From there, runners will head north up the Switzerland Trail and back to Gold Hill. The 12K course heads west along Gold Hill Rd to the famous Mount Alto Picnic area and back into town.
NO Dogs are permitted in the race. There are NO race refunds.
POST-RACE After the race, celebrate the day with your family, friends, and fellow participants at our after race party! We will have food, drinks and music!
BUS TRANSPORTATION To ensure minimal vehicle impact and disruption to the Gold Hill community on race day, we encourage all runners and spectators to utilize the shuttle bus to and from Boulder, leaving from Boulder County Justice Center (1777 6th St, Boulder, CO 80302). Parking at Gold Hill will be very limited, and the required cost per car will be a $30.00 cash donation. PRICING - To Gold Hill and Return to Boulder. Race Participants - FREE Non Competing Adult - $10.00 Non Competing 13 - 19 years - $7.50 Non Competing 6 - 12 years - $5.00 Non Competing 5 years & under - FREE
BUS TIMETABLE - Tickets are round-trip, and during the registration, you need to select a departing time for the bus trip up to Gold Hill, but you DO NOT need to select a return time back to Boulder.
BOULDER to GOLD HILL
Leave 6:00 AM - Arrive 6:30 AM Leave 6:15 AM - Arrive 6:45 AM Leave 7:00 AM - Arrive 7:30 AM Leave 7:15 AM - Arrive 7:45 AM ( LAST BUS )
GOLD HILL to BOULDER
Leave 10:15 AM - Arrive 10:45 AM Leave 11:00 AM - Arrive 11:30 AM Leave 11:45 AM - Arrive 12:15 PM Leave 12:30 PM - Arrive 1:00 PM ( LAST BUS )
Return buses will leave every 45mins from 10:15am until 12:30pm on a first come - first served basis.
Official Registration
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