Wyoming Range 100-Mile Endurance Run
About the race
Our 2027 lottery will open on February 1.
The race will likely be capped at 100 runners once again.
Lottery and entry limit
Our 2027 lottery will open on February 1.
The race will likely be capped at 100 runners once again.
Event manual
Read the 2026 event manual before you start.
Event information
Our website has information on drop bags, course conditions, gear requirements, parking, and weather.
Contact
Email us at [email protected].
Service requirement
All entrants must complete eight hours (or more) of trail work or wildlife habitat restoration work at least two weeks before race day. Trail work is validated with this form.
If you are in the Jackson, WY area, contact Friends of the Bridger-Teton for local trail projects.
Alternative to service work
- Donate $80 directly to Friends of the Bridger-Teton and send us your donation receipt.
Required gear
You must carry a variety of safety gear, including:
- A Garmin GPS device (for live tracking)
- Bear spray
If you cannot provide these items yourself, you can rent them from us at checkout.
The course
The Wyoming Range 100-Mile Endurance Run is a rugged and relentless 100-mile race along the Wyoming Range National Recreation Trail. The trail travels north-south through some of the most beautiful high country, and the race is fully supported. The course has heavy climbing and rarely offers breaks.
Graduate-level race and Hardrock qualifier
This is a graduate-level race with several unique challenges:
- You will run in grizzly country and must carry bear spray.
- There are long stretches between aid stations.
- The rough trail may involve way-finding.
- You could run through snow, lightning, and white-out conditions in the clouds.
Be prepared for a grueling challenge. Finishers are rewarded with a Hardrock qualifier.
Location
Middle Piney Lake, WY, Box Y Ranch, WY, USA Open in Google Maps
City insight: Box Y Ranch
Box Y Ranch is a community in Wyoming, USA. The high plains climate brings cold winters and warm, dry summers, so late spring and early autumn are the best seasons to race.
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