The Bristow 24/12/6 Hour Run is a timed loop race that lets runners challenge themselves to see just how many miles they can run within a set time limit.

The course is a 1.05-mile mostly-trail loop through Elijah Bristow State Park, just 30 minutes east of Eugene, Oregon. There are options for a 24-hour, 12-hour, and 6-hour time limit, a 12-hour night relay, and an amazing aid station is available every loop. Runners can also set up their own space to feed and fuel themselves or have a crew to support them along the way.