The Rubicon
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The Rubicon
The Rubicon is a remote on- and off-trail foot race held at Oxbow Reservoir, CA, organized by Skybreaker Racing and scheduled for October 24, 2026. The event takes place in the backcountry of the northwestern Sierra Nevada and involves significant distance and elevation gain.
This event is presented as a fatass, a group run without formal race infrastructure. There will be no course markings, no aid stations, no staff, and no medical team. Participants should expect self-supported navigation and logistics.
Route options include:
- 15+ miles, ≈6,700 ft gain, 3 hill climbs, 2 water crossings
- 30+ miles, ≈12,700 ft gain, 6 hill climbs, 6 water crossings
- 43+ miles, ≈19,300 ft gain, 8 hill climbs, 8 water crossings
Completion prerequisites apply: finishers must complete The Requisite before attempting The Resonant, and must complete The Resonant before attempting The Revenant. The Rubicon is scheduled to fall on the fourth Saturday of October when that month has five Saturdays; when October has four Saturdays the event moves to the first Saturday.
A Facebook group is used for updates and event discussion. Visit the organization's website for the most recent information.
