Wente 2026

The Wente 8-Hour MTB Relay Race transforms the private Wente Scout Reservation in Willits, California into an exclusive mountain biking…

Presented by Bike Monkey

Lost and Found Gravel Festival 2026

The Lost and Found Gravel Festival celebrates gravel cycling in California’s Sierra Nevada Mountains, taking place in the Lost Sierra’s…

Presented by Sierra Buttes Trail Stewardship

Western States 100 2026

The world’s oldest 100-mile trail race, Western States has been testing runners since 1974 on a demanding point-to-point course from…

Presented by UTMB World Series

Truckee Tahoe Gravel 2026

The mixed-terrain adventure winds through the gravel and dirt roads of Tahoe National Forest, offering three distance options that cater…

Presented by Bike Monkey

Death Ride – Tour of the California Alps 2026

The Death Ride has evolved from a modest gathering of 17 friends in 1978 to a legendary cycling challenge that…

Presented by Tour of the California Alps

Tahoe Rim Trail Endurance Runs (TRTER) 2026

The Tahoe Rim Trail Endurance Runs takes place on one of America’s most scenic high-altitude loop trails, offering 50K, 56-mile,…

Presented by TRTER

Tahoe Trail 2026

This Leadville Race Series mountain bike event takes place at Northstar California Resort in the Sierra Nevada mountains, offering riders…

Presented by Life Time Events

Angeles Crest 100 2026

The Angeles Crest 100 has challenged trail runners since 1986 through the rugged San Gabriel Mountains of Southern California. What…

Presented by Team AC100

Tour de Big Bear 2026

The Tour de Big Bear unfolds across multiple challenging routes through the San Bernardino Mountains, reaching elevations up to 8,500…

Presented by Big Bear Cycling Association

Downieville Classic 2026

The 26th iteration of this iconic mountain bike festival brings a unique dual-discipline challenge to California’s Sierra Nevada. The weekend…

Presented by Sierra Buttes Trail Stewardship

Mammoth Gran Fondo 2026

Starting at 8,074 feet in the Sierra mountains, the Mammoth Gran Fondo delivers one of cycling’s most spectacular high-altitude experiences.…

Presented by Mammoth Mountain Community Foundation

Usal Lost Coast Hopper 2026

This remote gravel event opens exclusive access to pristine redwood forest roads that are otherwise closed to the public year-round.…

Presented by Hopper Adventures (Grasshopper)

Grizzly 100 & Big Bear MTB Gran Fondo 2026

This mountain bike event in Big Bear Lake, California combines what were once two separate races into a single day…

Presented by National Ultra Endurance Race Series (NUE)

Mt. Diablo Challenge 2026

The Valley Spokesmen Bicycling Club celebrates 42 years of the Mt. Diablo Challenge, an 11.2-mile climb up one of the…

Presented by Valley Spokesmen Bicycle Club

Heart of Gold Gravel 2026

Heart of Gold Gravel explores remote roads north and east of Nevada City, California, combining the challenges of gravel cycling…

Presented by Bike Monkey

Lake Sonoma MTB 2026

This challenging 27-mile single-track loop around Lake Sonoma delivers over 4,300 feet of elevation gain with no bailout points, making…

Presented by Hopper Adventures (Grasshopper)

The Bovine Classic 2026

This Paso Robles gravel event has earned rave reviews from participants, with many calling it one of the best gravel…

Presented by Bike Monkey

Phil’s Cookie Fondo 2026

Former pro cyclist Phil Gaimon created this unique fondo that combines challenging riding through Malibu’s Santa Monica Mountains with an…

Presented by US Cycling Events

Avalon 50 2027

Presented by Run Catalina

Low Gap 2027

Presented by Hopper Adventures (Grasshopper)

Rock Cobbler 2027

Event for 2027 not confirmed yet… A favorite among gravel aficionados, Rock Cobbler is a quirky and challenging adventure race…

Presented by Ames Works

Huffmaster Hopper 2027

Presented by Hopper Adventures (Grasshopper)

The Great Ski Race 2027

Presented by Tahoe Nordic Search and Rescue

Gran Fondo Hincapie – Merced 2027

Presented by Hincapie Events