7791 S 15th E, Idaho Falls ID
Friday, December 12th, 2025
Select the Upgrades tab in the top menu above or CLICK HERE to purchase any additional Upgrades you didn't select when signing up for the race (T-Shirt, Hoodie, beanie, Designated Indoor Space, Deluxe Aid Station Access, etc.). The Upgrades are limited in number and will likely be sold out before the race. If you wait to register until the last minute, you will very likely be running "Bareback"!
The start corral will be just outside the Bonneville County Exhibition Hall. You'll need to be in it before the top of each hour. At the top of each hour, you'll start off on a wandering and possibly dizzying journey through Sandy Downs park. The course will be thoroughly and completely marked so you wonโt stand a chance of becoming lost. The course will be about 25% grass, 20% horse racetrack, 35% dirt, 8% sand, and 12% pavement (or because it's December in Idaho it could be 100% snow). To finish in time you need only run at a 14-minute 23-second pace (although youโll want to go a bit faster to give yourself some time in transition to eat, drink, and use the bathroom, etc.). A bell will ring at 3 minutes, 2 minutes, and 1 minute before the hour, letting you know it's time to get back into the starting corral. Everyone must start at the top of the hour and stay on course until they've finished their lap or run out of time.
At the start of each lap, everyone who remains is tied for first, meaning youโll be in first place until you quit or it ends and you win. The race continues until only one participant remains. The Last Horse Standing must complete one more loop than 2nd place (the assist person): otherwise, there is no winner. Everyone who doesn't win will get a custom DNF award. We'll also have awards for making certain benchmarks, like 50 miles (12 hours), 100 miles (24 hours), etc. The winner will be declared โLast Horse Standingโ and will get a special prize package!
The Deluxe aid station will be right inside the Exhibition Hall and have specialty items for food along with standard aid station fare. In addition to water, a choice of other beverages will be available. While the runners are out running the course, crew can refuel and relax close enough to town to quickly run into town for food and supplies.
Crew cannot provide any assistance to active runners while the runners are out on the loop. This includes going out on or near the course to cheer them on beyond the start/finish area.
Even though the race is going to be cold, we want it to be even cooler! Joining the AC Unit is a one-time cost of $20, and once you're in the AC Unit you're in for life! As an AC Unit Member, your job is to go outside and cheer every runner as they come in and/or adopt orphan runners (those without crew) to make sure they are taken care of. The $20 buys your AC Unit Scarf. Then at all future Dizzy Horse events, you can earn your own AC Unit pins to put on your scarf every 3 hours you help make it cooler. Bring your demotivational signs, cowbells, costumes, etc. We had Santa show up for 2022! This will help create an amazing finish-line atmosphere throughout the race!
It is a great social race that also requires strategy, a strong will, and a determination to not quit. The first several hours of the race are incredibly social, but later on, the race becomes an epic drama showing the human will to push past perceived limits.
We are excited to have the support of Grit League, the Idaho Falls Trail Runners, and Teton Auto Group in making this event unforgettable. Whether you come for the running, socialization, exploring your limits, or the amazing party, this will be an event you donโt want to miss!
If you donโt want to run but are willing to volunteer, weโd love to have your help. Please sign up to volunteer. Depending on how long you commit, volunteer perks can include access to the Deluxe Aid station, a T-Shirt, a Hoodie, and/or future entry into the event.
For more information about the race, visit the official website: Dizzy Horse Registration
Starting Line Map
Suggested Races