Next race
Sunday, 1 August 2027
7:00 am start
Distance
42.195 km / 26.2 mi
Scenic road
Elevation
Rolling · 150 m gain
150 m climbing
Race profile
The Run with the Horses Marathon draws approximately 57 finishers each August on a scenic road in Green River, United States. Green River's Run with the Horses Marathon serves southwestern Wyoming on a rolling high-desert course. The course tours Green River neighborhoods and high-desert plateau roads. Rolling terrain with moderate climbs shapes the middle miles.
Run with the Horses Marathon is a certified 42.195 km (26.2 mile) marathon — the standard World Athletics marathon distance.
Approximately 57 finishers
Course & terrain
The Run with the Horses Marathon is a rolling scenic road course with moderate climbs. Starts and finishes in Green River on a southwestern Wyoming loop. The course tours Green River neighborhoods and high-desert plateau roads. Rolling terrain with moderate climbs.
The Run with the Horses Marathon course is rolling over 42.195 km (26.2 miles). Runners cover 150 metres of climbing and 140 metres of descent, with a net climb of 10 metres from start to finish.
Rolling · 150 m gain — approx. 1,864 m above sea level
↑ 150 m · ↓ 140 m · net +10 m
Registration
Run with the Horses Marathon is typically held in August. Registration opens through https://www.runwiththehorses.com/ and may use a lottery or tiered entry when demand exceeds capacity.
Getting there
Rock Springs (RKS)
Southwest Wyoming Regional Airport
34 km / 21 mi
Common questions
Official resources
Last updated 11 October 2026. Edition dates and course details are reviewed regularly.
Close to this race
Other races closest to Green River.
The Bear Lake Wyoming Marathon draws approximately 41 finishers each August on a scenic road in Cokeville, United States. The Bear Lake Wyoming Marathon serves runners on the scenic Wyoming side of Bear Lake each August. The course tours Bear Lake basin roads with mountain and lake-country scenery on the Wyoming–Idaho border. Rolling terrain with moderate climbs shapes the middle miles.
Next race: Sunday, 1 August 2027
The Ogden Marathon draws approximately 2,500 finishers each May on a canyon point-to-point road in Ogden, United States. The canyon start gives the event one of the most scenic road descents on the U.S. spring calendar. The course passes steep canyon walls, pine-lined descents, and the Union Station area in the city finish. The route is net downhill overall.
Next race: Sunday, 2 May 2027
The REVEL Big Cottonwood Marathon is a net-downhill speed course drawing approximately 2,500 finishers each September through Utah's Wasatch Mountains. Starting at Guardsman Pass and descending Big Cottonwood Canyon to Cottonwood High School in Murray, the course drops roughly 1,600 m on a steep scenic mountain highway. September's crisp alpine morning and the fast descent make it one of America's most popular personal-best marathons.
Next race: Saturday, 18 September 2027
The Salt Lake City Marathon draws approximately 1,500 finishers each April on an urban road in Salt Lake City, United States. Descending from the east bench gives the race a quick first half before the city grid settles the pace. The course passes This Is The Place Heritage Park, Liberty Park, and temple district streets with Wasatch views throughout. The route is net downhill overall.
Next race: Friday, 23 April 2027
The Utah Valley Marathon draws approximately 2,200 finishers each June on a canyon point-to-point road in Provo, United States. Its long gentle descent makes it a common target for personal bests and Boston qualifying attempts. The route passes Deer Creek-adjacent canyon roads, the Provo River corridor, and broad urban streets near BYU. The route is net downhill overall.
Next race: Saturday, 5 June 2027
The Jackson Hole Marathon draws approximately 248 finishers each September on a scenic road in Jackson Hole, United States. Wyoming's largest marathon by participation finishes at the base of the Tetons on a certified Boston-qualifier course. The course tours Jackson Hole valley roads, community pathways, Wilson, and Grand Teton views. Rolling terrain with moderate climbs shapes the middle miles.
Next race: Sunday, 5 September 2027
Planning guides
Practical guides to help you plan, train for, and run this race.
What flat, rolling, and hilly really mean — and how to read elevation gain, net change, and altitude on a marathon course.
How major marathons allocate places — open entry, lotteries, charity bibs, tour operators, and what to check before you commit to a trip.
How temperature, humidity, wind, and rain affect marathon performance — and how to use typical race-day weather when choosing a start line.
