Born to Run Ultra Marathons

Born to Run Ultra Marathons run from May 12 to 15, 2027, in Los Olivos, California. The 100-miler (160.9 km) and the multi-day formats, 72 hours and 96 hours, start at 8:00 a.m.; the 30-miler (48.3 km), the 20-miler (32.2 km) and the 10-miler (16.1 km) follow at 9:00 a.m. All are run on trails, and no elevation gain is listed.

Four days of racing on the same ground turns the event into a festival as much as a competition, and the shorter distances are run in the middle of it — expect to share the trail with people who have already been out there for two days. For the 100-miler, a May start in inland California means the middle of the day is the hardest part: plan to move gently through the heat and make your time back after dark.