2027 Mt. Sneffels Half Marathon & 10K
Run in the "Switzerland of America" at the Mt. Sneffels Half Marathon.
Race Date
Aug 21, 2027
Location
Ouray, CO
Quick facts
- Date
- Saturday, August 21, 2027
- Location
- Ouray, Colorado
- Distance
- Half marathon (13.1 mi)
- Course
- Point to Point
- Terrain
- Road
- USATF certified
- Not listed
Highlights
Good For
Atmosphere
Course
The Experience
Set against the stunning backdrop of the "Switzerland of America," the Mt. Sneffels Half Marathon offers a unique running experience in Ouray, Colorado. This race, first run in 2005 and now in its 17th edition, typically sees around 190-200 finishers, with a loyal 23% returning each year.
The course is a point-to-point journey, primarily on paved roads, that winds through the picturesque San Juan Mountains. While the elevation gain and loss are minimal, the surrounding mountain scenery is anything but. Runners can expect a fast, certified course that is a favorite for those seeking personal bests, all while soaking in the dramatic alpine views.
The atmosphere is one of community and natural beauty, with the crisp mountain air and the promise of a festive finish. It's a destination race that draws participants from across the country, eager to experience the charm of Ouray and the challenge of a mountain-adjacent half marathon.
Race-provided description
Home Race Info Course Contact Home Race Info Course Contact .mobile-nav-toggle-label { display: inline-block !important; } MT SNEFFELS HALF MARATHON10K& KIDS FUN RUNRun in the“Switzerland of America”AUGUST 15, 2026 REGISTER HERE #block-yui_3_17_2_1_1771458371680_16252 { --sqs-block-content-flex: 0; } #block-yui_3_17_2_1_1771458371680_16252 { --opacity: 100%; --translate-x: 0px; --translate-y: 0px; --rotation: 0deg; --scale-x: 100%; --scale-y: 100%; --skew-x: 0deg; --skew-y: 0deg; --origin-x: 50%; --origin-y: 50%; opacity: var(--opacity, 1); transform: translateX(var(--translate-x)) translateY(var(--translate-y)) rotate(var(--rotation)) scale(var(--scale-x), var(--scale-y)) skewX(var(--skew-x)) skewY(var(--skew-y)); transform-origin: var(--origin-x) var(--origin-y); } Mark your calendars Au
Course Info
Course Type
Point to Point
Terrain
road
Scenery
Mountain
Surface
Paved
Difficulty
Ultra-Flat
Quality Score
Standout6517 years running
~199 finishers a year
shrinking
23% returning runners
2 timing sources · 8 photos
runners from 1 state
winner 1:28:59
typical high 76°F
Race Day Weather
5-year historical avgStart (Low)
52°
Afternoon (High)
76°
Warm — hydration strategy is key, start conservatively
0.1"
Precipitation
8 mph
Wind
51%
Humidity
Race Photos
Frequently asked
When is the 2027 Mt. Sneffels Half Marathon & 10K?
The 2027 Mt. Sneffels Half Marathon & 10K is held on Saturday, August 21, 2027.
Where does the 2027 Mt. Sneffels Half Marathon & 10K take place?
It takes place in Ouray, Colorado.
What distances does the 2027 Mt. Sneffels Half Marathon & 10K offer?
The half marathon (13.1 miles).
Is the 2027 Mt. Sneffels Half Marathon & 10K course flat and good for a PR?
The 2027 Mt. Sneffels Half Marathon & 10K is a ultra-flat, point to point course.
HalfRuns editorial — independent, no paid placement.
Explore More Journeys
Can't make it to Ouray? Discover other experiences that match your running style.
Search All Races
