Sean O'Brien 100K/50M/50K/26.2/30K 2027 | Calabasas, CA

Course Distances

100K

50M

50K

26.2M

30K

About this race

The 100k is a 2025 WS100 qualifier. #KHraces will be combining all distances for the Sean O'Brien Trail Races back together on the same day. We will have the 100k, 50 mile, 50k, Marathon, and 30k on January 27th, 2024.

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