Teton Dam Marathon, Half Marathon, 10K & 5K

Saturday, June 1, 2024 • Rexburg, ID • Course Map

An out-and-back race that takes runners on a commemorative tour of the site of the famous Teton Dam break, which inundated the nearby town of Rexburg in 1976, the Teton Dam Marathon, Half Marathon and Relay offers views of beautiful scenery, quaint towns and farmland and wide expanses of open spaces.

Runners start the USATF-certified course next to Madison Jr High School in Rexburg. From there, the race follows a route through the rural areas just outside Rexburg, with several uphill segments in the first few miles of the race.

That changes once runners are approaching the half-way point of the race, where the course begins to rise around the mile 5 marker, climbing more than 300 feet over the next couple of miles.

You’ll make your way across the Teton River twice during the half marathon, first  between mile markers 3 and 4, and then again a second time around the mile 8 marker.

Race organizers encourage runners planning on this race to include hill training in their preparations, as the course’s gentle, rolling hills meet runners all throughout the race. The event usually host a small field of runners, which past participants say adds to its personal, intimate charm.

All photos courtesy Rexburg Races

Race Weather & Climate

Weather conditions in the Rexburg area tend to be cool to moderately warm in the summer months, as June is the city’s rainiest month of the year. Record temperatures here during the month have fallen as low as 29 degrees (in 1998) to as high as 102 degrees (in 1988).

On race day (June 1), the average low is 42ºF and the average high is 70ºF.

Past Results

Course Map

See the race route map for the Teton Dam Half Marathon here.

Starting Time

  • 6:30 AM – full marathon
  • 7:30 AM – half marathon
  • 8:00 AM – 10K
  • 8:30 AM – 5K


  • $55 – $85 for the half marathon
  • $60 – $90 for the full marathon
  • $30 – $50 for the 10K
  • $20 – $40 for the 5K


To reserve your spot in the 2024 running of Rexburg’s Teton Dam Marathon, Half Marathon, Relay, 10K or 5K race, register online at RaceEntry.com here.

Official Race Website



Ever run in the Teton Dam Half Marathon? Share your impressions here, or post your review in the Comments below.

See more races in: June, Idaho

1 comment… add one
  • Melissa Marshall April 23, 2019, 2:04 pm

    Hi, my name is Melissa Marshall I am signed up for the 1/2 marathon on June 2nd. I signed up in the winter of last year. I now have a unexpected family commitment that does not allow me to race on Saturday. Is it possible to defer my spot in this race and run in your race next year? If not is it possible to get a refund.
    Thank you for your time
    Melissa Marshall


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