The Rubicon
Oxbow Reservoir, California · Saturday, October 24, 2026
The The Rubicon is a trail running and ultra event held on Saturday, October 24, 2026. It is located at Blacksmith Flat Spur Fs Rd 23-002 in Oxbow Reservoir, California.
- Date
- Saturday, October 24, 2026 at 7:15 AM
- Location
- Blacksmith Flat Spur Fs Rd 23-002
Oxbow Reservoir, California
United States
OpenStreetMap Google Maps
About Rubicon noun A limit that when passed or exceeded permits of no return.The Rubicon is a very difficult and remote on and off-trail foot race in the backcountry of the northwestern Sierra Nevada, and its undertaking should not be taken lightly. Make no mistake - this endeavor will test your limits!Disclaimer: This is not an official event. This is a fatass; a glorified group run. There will be no course markings, no aid stations, no staff, and no medical team.The route options are as follows:The Requisite: 15+ miles, ≈6,700 ft of gain, 3 hill climbs, & 2 water crossingsThe Resonant: 30+ miles, ≈12,700 ft of gain, 6 hill climbs, & 6 water crossingsThe Revenant: 43+ miles, ≈19,300 ft of gain, 8 hill climbs, & 8 water crossingsYou must first complete The Requisite in order to be eligible for an attempt of The Resonant in the future.You must first complete The Resonant in order to be eligible for an attempt of The Revenant in the future.More info can be found here.For updates, please join
the Facebook group.Scheduling: The Rubicon will fall on the 4th Saturday of October when there are 5 Saturdays in the month. When there are 4, it will move to the 1st Saturday to avoid conflict with Hilloween. Event's current local time: 1:55 AM PT