2026 COURSE NOTICE: The detailed section description below is legacy course information and does not reflect the 2026 route, direction, or mileage. The 2026 race starts and finishes at Loma Alta Park in Altadena on a 100.8-mile out-and-back course to Mt Hillyer. See the
2026 Full Course page y
2026 checkpoint table for current information.
2019 Puesto de socorro AC100 RedBox. Foto de : John Chin