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

Saturday, June 13, 2015 • 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 along 1st Street next to Rexburg’s Smith Park, and from there head out on a clockwise loop route that winds along paved country roads and tree-lined streets in the city.

The race will take runners twice over the Teton River, first between mile markers 2 and 3, and then again a second time around the mile 4 marker. The first five miles or so of the course are very flat and fast, and then between miles 5 and 6, the elevation begins climbing, rising about 300 feet between the lowest and highest points in the race.

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

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 13), the average low is 44ºF and the average high is 74ºF.

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


  • $50 for the half marathon, if registered by September 30, 2014
  • $60 between October 1 – April 30, 2015
  • $70 between May 5 – June 2
  • $80 between June 3 – 10
  • $90 on June 11 and after


To reserve your spot in the 2015 running of Rexburg’s Teton Dam Marathon, Half Marathon, Relay, 10K or 5K race, register online at ChronoTrack.com here.

Official Race Website


Facebook Conversations

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

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