50mi road ultramarathons in North America

Team relay journey covering 50, 100, or 200 miles on fully paved White Pine Trail, featuring woodlands, countryside, lakeside views, and historic rail route

Point-to-point mountain ultra traversing technical singletrack, fire roads, and steep climbs between Pilot Mountain and Hanging Rock with over 7,500 feet of asc

Out-and-back 50 miler from the Lincoln Loon heading south, with a straightforward course and a relaxed, community-centered finish at Prince Thomas Park.

Scenic dirt trails and conservation lands at Wolfe's Neck Center, with bridges, stairs, and tree roots across 5-mile loops; single aid station at start/finish.

Scenic road loop circling a Finger Lake, mostly flat to rolling terrain with challenging climbs including the renowned Bopple Hill

Looped course around Lake Merced with a challenging route designed for long-distance running

Multiple out-and-back segments along the Lakefront running path, mostly asphalt with some concrete, among the flattest 50k and 50-mile courses

Scenic routes across diverse terrain with 50K, 50 mile, and 100K options highlighting local landscapes

Flat, USATF-certified 10k road loop in Wakulla Springs State Park with ample volunteer support and scenic surroundings

Multi-distance road ultramarathon on a 3.34-mile loop through Hawaii Kai, featuring out-and-back segments and hydration stations at Kalama Valley Park

Fast, mostly flat 4.85-mile loop combining paved bike paths and wide dirt trails along the American River Parkway, crossing Guy West and Watt Bridges

Certified 1.2-mile loop with gentle elevation, 95% hard surface, scenic lake and bridge crossings, and generous time limits in Henderson, Nevada

Scenic route along Pistol Creek in East Tennessee, with a lit course and a friendly, community-driven atmosphere

Distance options including 50 miles, 100k, and 100 miles in Northern Colorado, with team and solo entries, camping, and community atmosphere