50K June ultramarathons in United States

Demanding 50- and 100-mile mountain routes over Scout Mountain, with tough climbs, rugged scenery, and high-country terrain in southeast Idaho.

Rugged 50-mile and 100-mile ultra on the Jericho Horse Trail, with swamps, deep forest, and punishing South Carolina heat and humidity.

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

50k mountain course through alpine meadows, huckleberry groves, and pine forests at Mt. Spokane Ski Park, featuring a fast-paced trail route

Runnable singletrack through rolling woodlands of Hobbs State Park, featuring gentle grades and accessible trails in a supportive community setting.

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

5-mile crushed limestone loop along the Ohio Erie Canal Towpath and Olde Muskingum Trail, starting in St. Helena Park, Historic Downtown Canal Fulton

Flat out-and-back route along the Green River Trail, riverside scenery and a relaxed, community-focused atmosphere

Scenic single-track and dirt roads through secluded river valleys and high country, gentle gradients in the Rock River Canyon Wilderness, moderate non-technical

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

Rugged singletrack through Loyalsock State Forest and Worlds End State Park, with rocky sections, waterfalls, remote terrain, and sweeping vistas

Two laps on a forested off-road loop with steady climbing, mixed singletrack and multi-use trail, and fire tower views across Watauga Lake.

Loop course through old-growth forests, steep climbs totaling 8400 feet, with scenic views of islands, mountains, and Puget Sound

Point-to-point 50k on the Monon Trail, net downhill from Sheridan cornfields to downtown Indianapolis, finishing via the Cultural Trail in White River State

Smooth single and double-track routes through Mueller State Park, spring-fed meadows, Pike Peak granite formations, and sweeping Colorado mountain views

Groomed, marked singletrack in Decorah’s bluff country, with distinctive terrain through Van Peenen Memorial Park.

Rooty dirt single-track and rolling hills on Waterloo Trails, 6.2-mile parkland loops with approximately 500 feet of elevation gain per loop, cupless event.

Repeated-loop 50K on mostly shaded, technical singletrack along the Madrone Trail, with sweeping Canyon Lake views and shoreline twists.

10.4-mile loop course through Salt Fork State Park with rugged hiking and bridle trails, rolling hills, and frequent mud crossings

Scenic Wasatch Mountains trails, attractive terrain, and a low-key local atmosphere with an intimate field and community support.