Ever wanted to be the captain of your own race? Head to Mueller State Park in Divide, CO for a one-of-a-kind running adventure where you can mix things up by drawing colored balls to randomly pick which loop to tackle next in the 12-Hour event—run as long as you'd like and rack up miles at your own pace. If you'd rather stick to a traditional format, the 10k, Half Marathon, and Marathon distances are waiting for you, and no matter which option you choose, you'll enjoy gorgeous double and single-track trails (zero pavement!), solid aid station support, and a friendly, pressure-free vibe with an 11-hour cutoff.