Dizzy Horse, A Winter Backyard Ultra

Fri, Jan 8, 2027, 5:00 AM MST

Location: 7791 S 15th E, Idaho Falls, ID 83404
Type: Run

Finish signup on the organizer site (check fees and dates there).

Race feel

A unique winter backyard ultra where you run 4.167 miles hourly until you're the last one standing, blending social fun with intense challenge.

Fun
Competitive
Quirky

The Dizzy Horse Winter Backyard Ultra challenges runners to complete a 4.167-mile loop every hour, on the hour, until only one "Last Horse Standing" remains. Held at Sandy Downs Park in Idaho Falls, this event blends a highly social atmosphere in the early hours with an intense test of strategy and endurance as the field narrows. Choose between a self-supported "Bareback" experience or upgrade to "Thoroughbred" for deluxe aid. It's a unique opportunity to push your limits and connect with fellow runners.

What to expect

Run a 4.167-mile loop each hour on a varied course of grass, dirt, sand, and pavement, potentially covered in snow.
Choose between a self-supported "Bareback" entry or a "Thoroughbred" experience with a deluxe aid station and reserved indoor transition.

From the organizer

A Winter Backyard Ultra

Starts on Friday January 8, 2027 at 10:00 am SHARP!

Run 4.167 miles every hour on the hour until only one participant remains

Hosted at the Bonneville County Exhibition Hall & Sandy Downs Park in Idaho Falls, ID

Race HQ Location: Click Here

Live Tracking: Click Here

2025 Participant Guide: Click Here

BAREBACK - This race can be run "bareback" style (general indoor transition area with no aid station access, just water and bathroom access). It's cheap, but great for those who can and want to take care of themselves, but still race. $55 Registration fee during the early bird pricing. Then its $65. THOROUGHBRED - Deluxe Aid Station with Catered Food, Reserved Indoor Transition Area, Custom Dizzy Horse Hoodie, or several options in between that you can add on as you wish. Regardless of whether you go Bareback or full-on Thoroughbred, once the top of the hour starts, everyone runs the 4.167 miles through the course on equal footing. Upgrades: 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, Deluxe Aid Station Access for Crew, 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"!

Upgrade Costs During Checkout or Later in the Store $5.50 Bib Belt $18 T-Shirt $35 Hoodie $45 Deluxe Aid Station Access During Entire Event (cost is per person, runners & crew can purchase) $50 Reserved 10'x'10 Interior Space (includes general indoor access for participant and up to 2 crew) (only 15 available)

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 won't 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 January in Idaho it could be 100% snow). The only part that isn't flat is the bit in the sand along the canal, with a lung busting climb with about 35 feet of vert. To finish in time you need only run at a 14 minute 23 second pace (although you'll want to go a bit faster to give yourself some time in transition to eat, drink, use the bathroom, etc.) A bell will ring at 3 minutes, 2 minutes, and 1 minute before the hour, letting you know that 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. There will also be a porta-potty at about the halfway point and heated bathrooms, you can use that porta-potty/bathroom or the porta-potties by the start corral without being DQ'd, but you can't run back to gear/food bag or get something from your crew after the bell rings until your finish your lap.