Are you up for the ultimate challenge? The Century From Hell packs a whopping 9251′ of climbing into this beautiful and tough 101-mile course. This Century has it alljaw-dropping coastal vistas, punishing mountain climbs through ancient redwood groves, crystalline reservoirs and pristine watershed areasthe very best that San Mateo County has to offer!

Named as one of “NorCal’s Top 10 Gran Fondo and Century Rides,” the Century From Hell has earned a reputation among hardcore cyclists as a “must-do” ride; a real challenge of strength, grit and endurance. Riders under 18 must be accompanied by a parent or guardian.

For 2019, all three of our road ride routes have been updated and are now better than ever with a scenic detour through the peaceful, winding backroads of Half Moon Bay.

Video from the 2017 Century From Hell courtesy of the ChiDonChea Channel on YouTube.

There are five aid stations plus a hydration stop along the course (see map below for exact locations). Check our Early Packet Pick-Up & Event Day page for starting times and additional details. You can also follow us on Twitter, Facebook and Instagram.

If you have specific questions about the course, please email us at or use the Contact form below.


  • All Aid Stations will be closed and SAG patrols will be making their final rounds at 5:00 PM.
  • Routes are subject to change based on CalTrans and local government requirements and/or weather conditions.