The start and finish for all three races is at Snake River Landing.

Welcome to the new Idaho Falls Marathon, Half Marathon, and 5K courses!

We're excited to introduce a faster, flatter, straighter, and safer course designed to give every runner the best opportunity to perform at their highest level. We listened to your feedback and built a course with fewer turns, fewer road crossings, minimal interruptions, and virtually no stoplights—allowing you to stay in rhythm instead of fighting traffic or navigating obstacles.

The marathon and half marathon leave Snake River Landing and head west through the beautiful Idaho countryside, where you'll be treated to wide-open farmland, mountain views, a spectacular sunrise, and yes... the occasional refreshing mist from an irrigation sprinkler. It's Idaho at its finest.

While we loved showcasing the Greenbelt in previous years, it simply wasn't the best place for hundreds of runners on a Saturday morning. The Greenbelt remains one of Idaho Falls' greatest assets and is the perfect location for your pre-race shakeout run, post-race recovery jog, or a relaxing walk with family and friends during race weekend.

 

• 26.2 -

• The Idaho Falls Marathon begins at Snake River Landing before heading west through the scenic farmlands of southeast Idaho on a fast, flat course. Designed with fewer turns, faster road crossings, the course provides runners the opportunity to maintain their pace while enjoying open country roads, beautiful sunrise views, and the unique charm of Idaho agriculture. The course returns to Snake River Landing for an exciting finish where your race began.

• Race cutoff: 12:00 p.m. (6-hour limit)

• Runners deemed medically unable to continue may be removed from the course for their safety.

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• 13.1 -  

• The Half Marathon starts at Snake River Landing and follows the same fast, flat course as the second half of the marahon through the beautiful southeast Idaho countryside. With long straightaways, minimal intersections, the course is ideal for runners chasing a personal best or simply looking to enjoy a smooth and scenic race.

• Race cutoff: 12:00 p.m. (5-hour limit)

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• 5k -

• The Idaho Falls 5K begins and ends at Snake River Landing, taking runners on a scenic loop through the riverfront on well-maintained gravel road then returns on paved pathways. Whether you're chasing a PR or your first finish line, this fun and picturesque course is perfect for runners and walkers of all abilities.