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ULTRA & TRAIL TRAINING

Train for the Sean O'Brien 50K

Feb 7, 2026  ·  Malibu, CA  ·  50K

Cadoo verifies the training, not the race. This event stays on the calendar. Live games are open on cadoo.games.

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Event details

The Sean O'Brien 50K

Everything you need to plan your build-up. Details below are for the event itself; the training happens on Cadoo.

DateFeb 7, 2026
LocationMalibu, CA (West)
Distance50K
TerrainTrail
EntryOpen
Field size~350 participants
Official event siteVisit ↗
Follow the eventSocial ↗
2026 edition done

Your Elevation Crusher plan for the Sean O'Brien 50K

Cadoo verifies the work before race day: camera reps and device steps. It does not time the course. Open the Ultra & Trail Arcade: Cadoo to pick this event and start a train-for game.

Elevation Crusher

For an event like this, Cadoo runs a Elevation Crusher game: it builds the specific fitness this event demands, one steps or camera-reps session at a time. Cadoo verifies camera reps and device steps. It does not time the course, and this race does not pay a cash prize.

16-week planDifficulty 7/10Team modeVerified workouts
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Train, host, and learn

The Sean O'Brien 50K training guide →

The full write-up: how the Elevation Crusher game maps to race day.

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What organizers get

For Sean O'Brien 50K, the weeks before the start are the product.

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