
From the Organizer
The course is a beautiful, flat 2-mile loop on the Bonneville Salt Flats - the fastest speedway on earth - on which you (Ultra) or your relay team of 4, 6, or 8 will see how many miles you can run from dusk to dawn (~11 hours). You will run directly on the salt overnight under the stars, from sunset to sunrise. The team who runs the most miles in each team category wins a trophy!
For your non-runner family and friends who still want to come and enjoy the night and support you - get a Party Supporter wristband!
In order for your final lap to count, you must finish it by sunrise. Otherwise, you make your own strategy. Decide who will run when, how many laps, who will start, finish, etc. It's up to you! Get together and figure out how you can run the most miles from dusk to dawn.
Enjoy all-night activities such as an ultimate scavenger hunt or tours of the cosmos from a local astronomy club, win awesome giveaway prizes, and enjoy a pancake breakfast for charity at the end of the race.
Distances & Pricing
Race Location
About This Sport
Endurance Grid is here to help you understand the sport, decide if it's the right fit, and learn how to prepare. For course distances, logistics, and race-day specifics, always defer to the race organizer's event page.
With running, there's a distance for every fitness level, a community at every start line, and nothing beats the feeling of crossing a finish line you trained for.
Running is an endurance sport that rewards consistency, and showing up every week compounds in ways that will surprise you.
From 5K to marathon, running races are the most accessible entry point into endurance sport. There's a distance for every fitness level and a community at every start line.
Frequently Asked Questions (FAQs)
Dusk to Dawn Relay + Ultra 2026
Sep 4, 2026