June ultramarathons in California, United States

52 miles with over 15,000 feet of elevation gain across oak forests, meadows, and steep climbs in the Santa Cruz Mountains and Sierra Azul Preserve

Classic Sierra National Forest trails near Fish Camp, with a rugged point-to-point feel, historic terrain, and aid stations spaced several miles apart.

Single tracks and fire roads through the Santa Monica Mountains, with ridges and canyons across 100k, 50-mile, 50k, and 30k distances

Out-and-back ultramarathon on the Pacific Crest Trail, featuring rocky single track, multiple climbs, and elevations rising from 3,000 to 6,000 feet.

Ancient sand dunes, sandy trails, mossy forest floors, and a scenic loop along Clearwater Creek and the Athabasca in Fort Assiniboine Sandhills Wildland

Point-to-point course from Cal Memorial Stadium to Skyline High School featuring 18,000ft of elevation, redwood forests, exposed ridges, and lakefront trails.

Alpine singletrack and forested trails through Big Bear, featuring Pacific Crest Trail sections and panoramic views of Big Bear Lake and San Gorgonio Wilderness

13,600 feet of elevation change over single track and fire roads, alternating hilly 13.5 and 11.5-mile loops from Cool Firehouse through river and ridge terrain

Flat out-and-back route on asphalt and dirt paths, shared with cyclists and equestrians, featuring changing weather and a lively race atmosphere

Looped 100-mile route through Lassen National Forest and Thousand Lakes Wilderness, 15,000 feet of elevation change, rocky ridgelines, lush forests, panoramic  

Looped single-track and dirt forest roads in the Klamath Mountains, historic Sisson-Callahan Trail, significant elevation gain, views of Mt. Shasta and Mt. Eddy

Rolling hills, wildflower fields, maritime chaparral, and sandy fire roads through Fort Ord National Monument

Historic, rugged 50K course on San Diego’s Amat Kwanyil trails with technical terrain, 5,000 ft elevation gain, and sweeping views from Black Mountain summit

Single-loop Tahoe Rim Trail route around Lake Tahoe, with relentless climbing, constant elevation change, ridge lines, forest, meadows, and alpine lakes

Trans-Sierra route from Olympic Valley, steep climb to Emigrant Pass, 100 rugged miles with 15,540 feet of ascent and 22,970-foot descent on historic trails

Looped course with repeated climbs up Mount Hillyer, shared camping, meals, and community atmosphere in the Angeles National Forest