Salt flats, ghost trails, and the floating mountains of Nevada's border
Other trail races within 185 miles
A 100-mile loop through one of the most unusual landscapes in ultrarunning. Starting at the Bonneville Salt Flats Speedway — the same expanse where land-speed records are set — runners cross miles of hard-packed salt, navigate remote desert mud-flats, and then spend the bulk of the course climbing four mountain passes in the Silver Island Range on rugged 4x4 jeep trails and ATV tracks. The course briefly crosses into Nevada and visits Hastings Junction, where the Donner-Reed party camped in 1846. A four-mile sprint back across the salt to the finish is the fitting send-off after 36 hours of desert running.
Some ultra experience recommended
Wendover, UT, United StatesApril 30, 2027
Salt Flats Endurance Runs 100 Mile is a loop trail race in Wendover, UT, United States, held on April 30, 2027. The course covers 100.5 miles, climbs 5,630 ft, and has a 36h cutoff.
| Location | Mile | Elevation | Cutoff | Crew | Pacers | Drop bags |
|---|---|---|---|---|---|---|
Start Start | 0.0 | 4,206 ft | — | |||
Aid #1 — Speedway/Salt Flats Aid Station | 10.0 | 4,213 ft | — | |||
Aid #2 — NO Post Aid Station | 15.5 | 4,222 ft | — | |||
Aid #3 — Cobb Peak Road Aid Station | 22.6 | 4,364 ft | — | Drop Bags | ||
Aid #4 — Cobb Peak Pass Aid Station | 25.5 | 5,420 ft | — | |||
Aid #5 — Hastings Junction Aid Station | 31.6 | 4,400 ft | 11h6:00 PM | Crew | Pacers | Drop Bags |
Aid #6 — Sheep Camp Aid Station | 39.5 | 4,649 ft | 13h30m8:30 PM | Drop Bags | ||
Unmanned Water Stop Resource | 46.9 | 4,649 ft | — | |||
Aid #7 — Hastings Junction Aid Station | 50.4 | 4,406 ft | 17h15m12:15 AM +1 | Crew | Pacers | Drop Bags |
Aid #8 — Ghost Dog Aid Station | 57.4 | 4,275 ft | 20h3:00 AM +1 | Crew | Drop Bags | |
Aid #9 — Silver Island Pass Aid Station | 61.7 | 4,265 ft | 21h30m4:30 AM +1 | Crew | Drop Bags | |
Aid #10 — Jeep Trail Aid Station | 67.0 | 4,255 ft | 23h30m6:30 AM +1 | Drop Bags | ||
Aid #11 — Rock Pile Aid Station | 74.3 | 4,639 ft | 26h9:00 AM +1 | Crew | Drop Bags | |
Aid #12 — Nevada Aid Station | 82.7 | 4,357 ft | 29h12:00 PM +1 | Crew | Drop Bags | |
Unmanned Water Stop Resource | 86.0 | 4,649 ft | — | |||
Aid #13 — Utah Aid Station | 89.8 | 5,394 ft | 31h15m2:15 PM +1 | Drop Bags | ||
Aid #14 — Home Stretch Aid Station | 96.3 | 4,222 ft | 33h45m4:45 PM +1 | Crew | Drop Bags | |
Finish Finish | 100.5 | 4,206 ft | 36h7:00 PM +1 |
Aid station details for this race are still being filled in. Cutoffs and access rules come from the race’s own published information and can change — check the official race details before planning around them.
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
Dogs may run anywhere on the course with a registered runner. Runners with dogs MUST have crew support. Dogs must be leashed at the start, finish, and all aid stations; may run off-leash between aid stations. Dogs may optionally be registered as participants and can earn their own finisher buckle if they complete the full distance.
Car camping on the Bonneville Salt Flats at the Start/Finish area in dry years. Event toilets provided. Portable fire pits only — no open fires on the salt. All ash and refuse must be taken off the salt.
May conditions at the Bonneville Salt Flats can range from pleasant to punishing. Daytime temperatures often reach 75–90°F (24–32°C) on the exposed salt, with little to no shade throughout the course. The salt amplifies UV and radiant heat significantly. Nights cool quickly to the 40s–50°F (4–15°C), so runners need both sun protection and cold layers. Spring winds are a constant and can be strong enough to prevent aid station canopies from being set up. Afternoon thunderstorms are possible but less common than in summer. Race morning typically begins clear and mild, with heat building through the afternoon.
Daytime temperatures regularly hit 80–90°F on the exposed, shadeless salt flats and desert
The reflective white salt surface dramatically increases UV exposure; sunscreen and sun-protective clothing are essential
Persistent desert winds are the norm; strong winds may prevent aid station shade canopies from being deployed
Spring weather in the Utah desert can shift rapidly; cold nights follow hot days and brief storms are possible
No required gear specified
No recommended gear specified
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