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 crossings The Resonant: 30+ miles, ≈12,700 ft of gain, 6 hill climbs, & 6 water crossings The Revenant: 43+ miles, ≈19,300 ft of gain, 8 hill climbs, & 8 water crossings You 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.
Oct 24, 2026
Distance — The Requisite
Type — Running
07:15
Oct 24, 2026
Distance — The Resonant
Type — Running
07:15
These values represent the 3-year monthly averages for October in Oxbow Reservoir.
All-time top performances and historical records for The Rubicon.
| Place | Name | Year | Time | |
|---|---|---|---|---|
| 🥇 | Loren Baker | '25 | 10:07:11 | |
| 🥈 | Michael Schooler | '25 | 10:07:14 |
Read what other athletes have to say about their experience at the The Rubicon.
Be the first to share your experience with the community!
Spotted an error or missing detail about the The Rubicon? Help us improve.
Explore other exciting events happening in this same region.
location_on Coloma, California, US
calendar_today Oct 17, 2026
Hand-picked events we think you’ll love.
Jan 02, 2027
The New Year's Duathlon and 5K Trail Run Run, Bike, and Run in the New Year with TBF at Granite Beach, Folsom Lake. New…
Read more
Jan 09, 2027
The IPA Trail Runs The IPA Trail Runs will feature two courses along the shoreline of Folsom Lake with challenge and fu…
Read more
Jan 23, 2027
The Gumby 5K & 10K Trail Runs Gumby Finisher Medals are back at the Gumby 5K & 10K in 2027! The races will feature a be…
Read more
Feb 20, 2027
Lost Trail 5K & Half Marathon Trail Runs The Lost Trail 5K and Half Marathon have beautiful and very well-marked course…
Read more