161 kmTrail🇺🇸 Dayton, United States

Bighorn 100

Friday, 18 June 2027Estimated dateIn 8 months · Start 09:00

A technical out-and-back through the canyons and high meadows of the Bighorn Mountains, from Tongue Canyon at 1,300 m to the Jaws trailhead turnaround at about 2,680 m and back down to the finish party in Dayton.

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Facts checked 23 Oct 2026 against bighorntrailrun.com, bighorntrailrun.com, en.wikipedia.org.

Elevation gain

6,250 m

Mountain · ↓ 6,325 m

Highest point

2,680 m

above sea level

Temp at start

16°C

Peaks around 20°C

Entry fee

Check site

Open entry

Finishers

—

typical year

Course

Out and back

35h cut-off

Getting thereFly into SHR (Sheridan), about 27 km from the start

Course map

A detailed route is not available for this race yet. The marker shows the race location.

Elevation profile

Mountain: about 6,250 m of climbing and 6,325 m of descent. A detailed profile isn’t available for this race yet.

Race-day weather

At start

16°C

Peak during race

20°C

Humidity

56%

Chance of rain

19%

Wind

9 km/h

18 June in past years

Historical averages for 18 June ±3 days, 2016–2025, from 09:00 for 5 hours (70 days sampled). Source: Open-Meteo / ERA5.

Finish times by age group

No data yet. We’re collecting age-group results race by race.

Runner reviews

What time could you run here?Adjust your goal time for this course’s hills and typical race-day weather.Race time calculator →

Guides for this race

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Show your runners the course facts and race-day weather. Paste this code into your site; it displays the badge below and links to this page. It updates automatically when the race details change.

<a href="https://irun42.com/race/bighorn-100" title="Bighorn 100 on iRun42"><img src="https://irun42.com/badge/bighorn-100.svg" width="300" height="120" alt="Bighorn 100: course, elevation and race-day weather on iRun42" /></a>

Plan your trip

Searches are set for Dayton and the race weekend.

Hotels near the start lineClosest first · 2027-06-17 → 2027-06-19Booking.com Flights to DaytonArrive 2027-06-16, fly home 2027-06-20Google Flights Things to do in DaytonTours and attractions in United States for the days around the raceKlook Mobile data in United StatesAn eSIM for maps, tracking apps and results on race dayAiralo Airport transfer from SHRSheridan airport is about 27 km from the startKiwitaxi Rent a carFor getting to the start and the trailheadsEconomybookings

Gear for this race

Trail running shoesGrip for the unpaved sections Hydration vestCarry water and food between aid stations Electrolyte tabletsIt often reaches 20°C during the race Running headlampFor early starts and running into the night

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Around the same time

All races in June 2027 →