calendar_today 01 May, 2026 – 02 May, 2026
directions_run Running
language Official Website
sell $50.00 – $300.00
The Salt Flats Endurance Runs take place on May 1–2, 2026, at the iconic Bonneville Salt Flats International Speedway near Wendover, Utah. This unique event offers a range of distances, including a 100-miler, 100K, 50-miler, 50K, and newly expanded 10K and 5K fun runs. The ultra-distance events are known for their fast, flat starts on the salt crust—the same terrain used for world land-speed records—before transitioning into the rugged "Islands" mountain peaks and mud flats of the high desert.
| Race Distance | Start Time | Time Limit | Course Highlight |
|---|---|---|---|
| 100 Miler | Friday, 7:00 AM | 36 Hours | Crossing into Nevada on the Donner-Reed path |
| 100K | Friday, 7:00 AM | 18 Hours | Four significant mountain climbs |
| 50 Miler | Friday, 7:00 AM | 14 Hours | Rolling hills and two significant climbs |
| 50K | Friday, 7:00 AM | 10 Hours | 13 miles of salt and 3 miles of mud flats |
| 10K & 5K | Saturday, 12:00 PM | N/A | Simple out-and-back speedway course |
The geography of the Bonneville Salt Flats is both visually stunning and physically taxing, characterized by a vast, white expanse of salt that can create a "white sea" effect. Runners start at an elevation of approximately 4,200 feet, facing extreme exposure to the sun and potential wind across the flats. While the salt crust is hard-packed, the transition to mud flats and the steep climbs on the "Islands" requires versatile footwear. In early May, the high desert climate typically sees daytime highs around 21°C (70°F), but night temperatures for the 100-mile and 100K athletes can drop significantly to near 4°C (40°F), requiring careful pacing and layering.
Logistically, registration for the 2026 Salt Flats Endurance Runs closes on Friday, April 24, at 11:59 PM MT. All ultra-distance events start simultaneously at 7:00 AM on Friday, utilizing a centralized start/finish line at the speedway. The 100-mile course is historically significant, following portions of the route taken by the Donner-Reed Party. For 2026, organizers have added finisher awards for the 5K and 10K events, making the weekend more inclusive for family and support crews. Top performances at the event include Mark Hammond’s 2017 course record of 14:49:43, showcasing the speed potential of this flat but challenging landscape.
May 01, 2026
Distance — 160.9K
Type — Running
07:00
$300.00
May 01, 2026
Distance — 100K
Type — Running
07:00
$240.00
May 01, 2026
Distance — 80.5K
Type — Running
07:00
$220.00
May 01, 2026
Distance — 50K
Type — Running
07:00
$140.00
May 02, 2026
Distance — 10K
Type — Running
12:00
$70.00
May 02, 2026
Distance — 5K
Type — Running
12:00
$50.00
These values represent the 3-year monthly averages for May in Wendover.
Learn more about the host city, Wendover.
Wendover is a city on the western edge of Tooele County, Utah, United States. The population was 1,115 at the 2020 census.
Read more launchWatch highlights and course previews from previous years.
Explore other exciting events happening in this same region.
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