July ultramarathons in California, United States

Rocky out-and-back course through Bear Valley and Lake Spaulding, steep ascents on Signal Peak loop, challenging terrain with rugged segments

Technical singletrack and rolling fire roads through shaded oak groves and exposed hillsides, with sweeping Bay Area views and a challenging elevation profile

Trail route through towering coastal redwoods, stream canyons, meadows, pine and oak forests, ridges, and San Lorenzo river crossings

Steep ascents and dramatic descents along the Harding Truck Trail in the Santa Ana Mountains, featuring expansive vistas and a 50K distance.

Looped 50K course through Tahoe National Forest, mixing singletrack and fire roads, rocky summit climbs, 6000–8000 ft elevation, 3000 ft gain

Looped 1.3-mile course featuring trail, grass, and bike path segments in Montgomery Waller Community Park, near Imperial Beach and Chula Vista

Scenic loop route on dirt fire trails with modest elevation gain and classic trail ambiance

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

Relatively flat out-and-back rail trail from McCloud with views of Mt. Shasta and excellent footing in a mountain setting

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

Nighttime 50k on historic Cahuilla tribal lands, 7-loop course with single track and dirt road terrain, headlamp required, festive atmosphere

135-mile route from Badwater Basin to Whitney Portal crossing three mountain ranges, 14,600 feet of ascent, desert heat, and iconic California scenery