KHKH RacesTrail Series · Est. 2010
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Santa Monica Mountains · Trail Series

Sean O’Brien Trail Runs

Sat, Jan 30, 20277:30 AM · all distancesMalibu Creek State Park
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Distances510K → 50K
Race DaySat, Jan 30, 2027All start 7:30 AM
WhereMalibu Creek State ParkCalabasas, CA
TerrainSingletrack& fire road · well-marked
Choose your distance

Five courses,
one wild park.

Every distance starts at 7:30 AM. Tap Course Map to explore the route and elevation, then register on UltraSignup.

30K

Start7:30 AM
19.4Miles
3,894Ft Gain
2,217Ft High
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50K

Start7:30 AM
32.1Miles
6,719Ft Gain
2,273Ft High
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Marathon

Start7:30 AM
27.2Miles
5,692Ft Gain
2,257Ft High
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50 Mile

Start7:30 AM
49Miles
11,492Ft Gain
2,404Ft High
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100K

Start7:30 AM
61.7Miles
13,179Ft Gain
2,408Ft High
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The Race

Epic trail racing
in Orange County

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