A self-reliant 50-miler through Malibu's coastal mountains — AC100 qualifier
Other trail races within 149 miles
A rugged out-and-back through the Santa Monica Mountains, sharing the first half of the 100K course through Corral Canyon, Kanan Road, and Zuma Edison Ridge before looping back. No crew or pacer access anywhere on course — runners are fully self-reliant between aid stations. Finishing the 50 Mile earns a Sterling Silver Ticket for the Angeles Crest 100 lottery.
Experienced ultrarunners
Calabasas, CA, United StatesJanuary 30, 2027
Sean O'Brien 50 Mile is an out-and-back trail race in Calabasas, CA, United States, held on January 30, 2027. The course covers 49 miles, climbs 11,490 ft, and has a 16h30m cutoff.
| Location | Mile | Elevation | Cutoff | Drop bags |
|---|---|---|---|---|
Start Start | 0.0 | 525 ft | — | |
Corral Canyon #1 Aid Station | 7.3 | 2,001 ft | — | |
Kanan Road #1 Aid Station | 13.5 | 1,542 ft | — | Drop Bags |
Zuma Edison Ridge Mtwy #1 Aid Station | 16.3 | 1,752 ft | — | |
Bonsall #1 Aid Station | 22.3 | 79 ft | 6:00 AM | |
Bonsall #2 Aid Station | 25.8 | 79 ft | 1h30m7:30 AM | |
Zuma Edison Ridge Mtwy #2 Aid Station | 32.0 | 1,795 ft | 3h45m9:45 AM | |
Kanan Road #2 Aid Station | 34.6 | 1,542 ft | 4h30m10:30 AM | Drop Bags |
Corral Canyon #2 Aid Station | 40.8 | 1,998 ft | — | |
Piuma Cutoff Checkpoint | 46.5 | 686 ft | 10h4:00 PM | |
Finish Finish | 49.0 | 551 ft | 10h30m4:30 PM |
Sign in for race-day weather at every station, points of interest, segment-by-segment analysis, pacing, and to save this race to your calendar.
Malibu Creek State Park has an on-site campground adjacent to the race venue. Book in advance via California State Parks reservation system.
January is peak rainy season in coastal Southern California — trails can be muddy and conditions variable
Overnight temperatures can dip to the 40s°F; headlamp required after dark with no crew to resupply
No required gear specified
No recommended gear specified
No reviews for this event yet. Be the first to share your experience!
