Grinduro California, the popular gravel party with a race in the middle that also benefits a local outdoor nonprofit, returns this year for another installment of the ride that tells “a tale of two sides” of Mt. Shasta.
For race organizers, the name of the game this year is getting butts on saddles. To that end, they’ve excitedly announced there’s no snow “anywhere” on the 59.1-mile course, and that wildflowers are “exploding.” Also, there’s no hike-a-bike on this trip, which organizers said will embolden some but “admittedly chagrin” others.
The weekend runs May 19-21, with races on Saturday sandwiched between assorted revelry and ancillary rides. Organizers extended the registration deadline in a final bid to fill out the grid.
“Riders will experience everything from rough remote gravel roads to smooth swoopy singletrack, all between an elevation of 3,500-5,000 feet to stay out of the snowpack,” a press release said.

Course co-designer Dave Tricamo dove in further.
“The Grinduro course comes in at 59.1 miles with 21 of those paved and 6,325 ft. of elevation gain. Do not be misled by the mileage, this is a tough course with relentless changes in elevation and a multitude of surface types that will keep riders on their toes. And as for the most important of considerations, tire type and pressure! I’d ride a 40C tire with some knobs at about 40 PSI. This is not a mountain bike course,” Tricamo advised.

Racing takes place Saturday, May 20. Roughly speaking, the course leads riders from smooth, wide roads in timber country south of Mt. Shasta to a steep, zigzagging singletrack finish. Along the way, there’s scenic private property Grinduro obtained special permission to ride, plus some challenging gravel climbs, and an idyllic lunch on the Lake Siskiyou shores.
A shorter option, Grindurito, appeals to riders less experienced or out for a lark. At 35.5 miles and 3,546 ft. of climbing, it encompasses Grinduro stages 2-4.
The three-day event also includes preliminaries on Friday, and the “Wahoo Hangover Ride” on Sunday — plus plenty of “maxin’ and relaxin'” in the form of camping, live music, food, and “festival vibes.” For routes, GPX files, and all available course details, check out the course maps site.