Intermediate ultramarathons in California, United States

Northern Sierra Nevada trails with steep elevation gains, raw terrain, and views of mountain lakes, granite ridges, and dense forests

USATF-certified ultramarathon featuring city landmarks, Golden Gate Bridge out-and-back, challenging climbs, and coastal views

Scenic 2-mile loop at Harvey Bear Ranch with hill and mountain views, multiple distance options, generous cutoff times, and a community-focused environment.

Bay Ridge 100k and Firetrails 50-mile ultras commemorating Dick Collins, featuring P-USATF Grand Prix competition and UTMB points eligibility

Three-loop course through Cuyamaca Rancho State Park, summiting Cuyamaca Peak, circling Oakzanita Peak, and running PCT segments with desert views.

Mountain routes near Los Angeles featuring Big Bear Lake views, Sugarloaf Mountain ascents, and descents into Siberia Canyon

50k trail course through the American River Canyon, scenic Auburn routes, and post-race cider celebration with handcrafted drinks

Rugged terrain and remote trails in the Santa Ana Mountains, 50M and 50K routes on single track and forest roads with challenging elevation and striking scenery

Rugged Lake Sonoma trails with 24,000 feet of elevation gain, fast non-technical sections, winter mud and rain, vibrant start/finish festivities

California Classic singletrack ultramarathon with Lake Sonoma views, generous cutoffs, strategic aid stations, and late season wine country scenery

72 miles around Lake Tahoe, counter-clockwise night start, lakeside finish, 18-hour cutoff

Rugged Whiskeytown National Recreation Area course featuring demanding trails, substantial elevation gain, and scenic terrain

Eastern Sierra trails and dirt roads, cool air, potential mountain snow, and challenging 33k and 50k courses supporting Inyo County Search and Rescue

Rugged loops around Lake Perris with 2,300 to 4,500 feet of elevation gain, lake and mountain views, frequent aid stations, and camping on site

Scenic hills of Almaden Quicksilver Park, 60% dirt roads and 40% single track, significant elevation changes, countryside views

Undulating course through Western States trails, with Folsom Lake and American River views across single track and roads in Northern California

Stony dirt paths and single-track trails with rolling hills, frequent elevation changes, and lake views around Folsom Lake

Golden Gate Bridge sunrise crossing and varied terrain through Marin Headlands, featuring dramatic mountain views and sweeping seascapes

Point-to-point 50-mile course from Sunrise Trailhead through Cuyamaca Rancho State Park, forested trails, and Oriflamme Canyon to the desert floor finish.