Trail
Ammon's GR100
164 km
Paid registration: 0.00 USD
Goat Rattler 100
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Trail in United States, Ogden
Distances
Trail
Goat Rattler 100
163 km
Trail
Goat Rattle 50
80.5 km
Trail
Goat Rattle 50
80.5 km
Paid registration: 0.00 USD
About
A 101.5‑mile single‑track mountain race with roughly 22,500ft of vertical, featuring 96% singletrack and a car shuttle across Pineview Dam.
Catering & aid stations
On-course aid stations with food and drink provided at regular intervals along the route.
Pacers
Pacers are permitted starting at Lower Maples (Mile 41.38). Pacers may be swapped at designated checkpoints: Ard Nord (Mile 51.2), N. Ogden Divide (Mile 69.08), Willard Campground (Mile 80.33), North Fork Horse Corral (Mile 90.65), and Mule Ear (Mile 95.27). Pacers must follow holding areas and parking instructions to avoid congestion at aid stations.
Results
View official resultsTypical weather in Ogden
Monthly averages based on historical data (2000–present).
Jan34°17°
↑ 07:52
↓ 17:23
Feb38°21°
↑ 07:24
↓ 18:02
Mar48°28°
↑ 07:40
↓ 19:35
Apr58°35°
↑ 06:48
↓ 20:08
May68°45°
↑ 06:10
↓ 20:40
Jun81°55°
↑ 05:55
↓ 21:03
Jul91°64°
↑ 06:09
↓ 21:00
Aug87°62°
↑ 06:39
↓ 20:28
Sep77°53°
↑ 07:10
↓ 19:38
Oct61°40°
↑ 07:41
↓ 18:48
Nov47°28°
↑ 07:17
↓ 17:10
Dec36°19°
↑ 07:48
↓ 17:01
Prices & signup
- Ammon's GR1000.00 USD
- Goat Rattle 500.00 USD
FAQ
Are pre-requisites required to enter?
No. There are no prerequisites; the event is open to all experienced ultra-runners. First-time 100-mile participants are welcome at the organizer’s discretion.
What is the vehicle/shuttle policy?
A car shuttle is required at the Pineview Dam crossing (Mile 48.8). Vehicles must use the shuttle for runner safety; a short drive transports runners across the dam to WindSurfer Beach. Failure to use the shuttle may result in DQ.
What gear is recommended?
Bring ample water, nutrition, and traction devices for ~22,500ft of climbing. 96% singletrack means rocks, roots, and mud—pack accordingly and prepare for remote conditions.
How is aid station support arranged?
Aid stations are spaced at regular intervals along the route, providing food, drink, and basic medical support. Pacers and crew must adhere to parking and holding area rules at stations to minimize congestion.
Last updated: Jun 5, 2026, 11:53:53 PM
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