Team Relay, Solo Challenges, 6 Hour Nighttime Fun Run, 50K, 100K and 100 mile categories

Race under the sun and stars in the running mecca of Boulder, Colorado. 24 Hours of Boulder is a series of endurance races that brings out the sense of adventure, stubborn determination and fun in every competitor! This thrilling format has been popular with bike races for years and is now available to runners!

24 Hours of Boulder is all-day and all-night. Runners can participate in a number of different distances or timed events. For racers, this will be one of the most memorable events of your life. For spectators and crew, it will be a weekend festival where you will witness athletes pushing themselves beyond their personal limits of endurance. Whether you’re assembling a dream team, or you’re a recreational runner, there is a category designed for you. You can choose to race as a Solo runner, or create a team of up to ten people, depending on the level of endurance you wish. If you’re looking for a team or a team looking for another runner, check out Team Connect. For timed races, each participant is required to complete at least one 7.14 mile lap, however, the team’s objective is to complete as many laps as possible within the given time frame.

This race is a fast flat course. The course is an even mix of pavement, dirt road and smooth single track with a stunning view of Boulder’s front range. And after each 7.14 mile lap, you’ll return to Base Camp, complete with lots of food choices and the tent city with easy access to your gear, team and crew.