If you have SBR race credit, it can be applied to any of these events.
March 27th, 2027 | Bad Ass Backyard Ultra Last-Person-Standing Event | Rio Linda, CA “Hee-haw!” | ; |
May 31st, 2025 | Sonoma Coast Trail Runs 50K | Trail Marathon 30K | Half Marathon | Duncans Mills, CA “The Coast is Calling!” | ; |
September 7th, 2025 | Mammoth Bar Trail Runs Half Marathon | 10K | Auburn, CA “Standard Distance – Mammoth Vert!” | ; |
October 5th, 2025 | Yuba Gold Trail Runs 50K | 35K | Half Marathon | North Bloomfield, CA “Not your mama’s trail race!” | ; |
Hybrid Events
Sometimes referred to as Hybrid or Self-Guided, these are essentially D.I.Y. events. Go out and complete the course on your own, with friends if you like, and/or with aid provided by friends.
Afterward, submit your results and activity link via Ultrasignup for proof of completion, and you’ll receive a finisher award and rank in the results.
For each of these, you will have an entire month (or longer) to get it done in. In other words, you choose when you’ll run the course—it just has to be run continuously (all in one go) and within the specified time period, as listed below. There are also no official cutoffs for these runs.
Fatass Events
These are organized by SBR’s RD.
April 18th, 2026 | Cool-Auburn Pub Run 35K | Cool, CA 10 drink stops over 21.75 mi. | ; |
July 11th, 2026 | Iron X An Extreme Ironing Race | Auburn, CA Half Marathon with ~8 Irons | ; |
October 24th, 2026 | The Rubicon Three Rugged Distances | Oxbow Reservoir, CA “Redefine Your Limits” | ; |
Unaffiliated Events
SBR’s RD assists with these events.
May 2nd, 2026 | Wild Wild West 50M | 50K | Marathon | 10M | Lone Pine, CA | ; |
September 18-21, 2026 | Mile Madness 72hr | 48hr | 100M | 24hr | 12hr | 6hr | Rocklin, CA | ; |
Recommended Events
February: FOURmidable
July: Lost Sierra
August: Desolate Peaks (fatass*)
October: Tony & Phil’s Folsom Firkin Run (fatass*)
October: Euchre Bar Massacre (fatass*)