Teton Dam Marathon
Rexburg, United States of America · Sunday 6 June 2027
The Teton Dam Marathon is held annually in Rexburg, Idaho, typically on the first Saturday of June to coincide with the anniversary of the Teton Dam collapse of 1976. The marathon course starts at the Teton Dam Site in Teton, Idaho, at an elevation of approximately 5,380 feet. The initial segment of the race, consisting of the first 15 miles, is a gentle downhill with an elevation drop of around 500 feet.
Difficulty Calculator
h
:m
:s
Adjusted Time
4:03:40
Time difference: +3.7 minutes compared to a flat, road, temperate course.
Course Details
Elevation Gain139m
Elevation High1637m
Elevation Low1483m
Weather Forecast
High27°C
Low12°C
Chance of Rain3%
How hard is Teton Dam Marathon?
Moderateharder than 52% of marathons
Flattest / easiestHardest
On our difficulty model, Teton Dam Marathon plays about 7 minutes slower than an average road marathon for a 3:30 runner. It ranks #547 hardest of 1151 marathons we analyse, and #292 of 576 in United States of America. Use the calculator above to see the exact adjusted time for your own goal pace.
What will you run at Teton Dam Marathon?
Estimated finish times on this course versus the same effort on an average road marathon, based on its elevation, surface, and expected race-day temperature.
| Average-course time | On Teton Dam Marathon | Difference |
|---|---|---|
| 3:00:00 | 3:00:30 | +00:30 |
| 3:30:00 | 3:32:00 | +02:00 |
| 4:00:00 | 4:03:40 | +03:40 |
| 4:30:00 | 4:35:27 | +05:27 |
| 5:00:00 | 5:07:23 | +07:23 |
| 5:30:00 | 5:39:25 | +09:25 |
| 6:00:00 | 6:11:34 | +11:34 |
Use the calculator above for your exact goal time. Want a prediction from your own training? Try the marathon time predictor.
Teton Dam Marathon 2027 Course Analysis
Teton Dam Marathon is a full marathon held in Rexburg, United States of America. It is scheduled for Sunday 6 June 2027. The course is run on road surface with 139m of total climbing, with its high point near 1637m above sea level. For registration and full race details, visit the official Teton Dam Marathon website.
Elevation Profile
With 139m of total climbing, this is a gently undulating course, ranging between roughly 1483m and 1637m above sea level. The elevation changes are manageable for most runners and shouldn't greatly affect your pacing.
Expected Race Day Weather
Based on historical weather data for June, the expected race day conditions are as follows. Moderate temperatures between 12°C and 27°C are expected. While comfortable for most runners, those targeting fast times should pay attention to hydration, as these temperatures can impact performance on race day. There is a low chance of rain (3%), so dry conditions are likely.
Surface Type: Road
Teton Dam Marathon is run on road surfaces, which provide the fastest and most predictable conditions for racing. Road courses allow for consistent pacing and are typically the best choice for a personal best.
Looking for an easier marathon or a tougher challenge? You can also compare Teton Dam Marathon against other marathons to find the right race for your goals.
Marathons of similar difficulty
If Teton Dam Marathon fits your goal, these courses play out about the same on our difficulty model.
Other Marathons in United States of America
Run Crazy Horse
Crazy Horse Memorial, United States of America
Road216m gainOct 2026
Whiskey Row Marathon
Prescott, United States of America
Road0m gainOct 2026
Hartford Marathon
Hartford, United States of America
Trail230m gainOct 2026
Rogue Marathon
Medford, United States of America
Road168m gainOct 2026
Holloman Ace of Races Marathon
Alamogordo, United States of America
Road104m gainOct 2026
Des Plaines River Trail Marathon
Libertyville, United States of America
Trail144m gainOct 2026