Trail ultramarathons in United States (East Coast)

16.5-mile loops through Finger Lakes National Forest, single-track trails, grassy pastures, dirt and paved roads, 1292 feet elevation gain per loop

Scenic Kennesaw Mountain course passing historic sites, wooded trails, gravel, and asphalt, featuring sunrise and sunset views along an 8-mile out-and-back loop

60k course with 1,600 feet of elevation gain on the varied trails of Red Wing Recreation Area in Lagrangeville, NY

Scenic 1.9-mile loop at Notchview with a 0.2-mile climb, rolling single and double track, open fields, and cross-country ski trails

Casual-paced ultrarun emphasizing camaraderie, pedestrian-friendly routes, and essential self-supported hydration, with unique aid stops along the course.

Six-loop 50K on technical, rocky singletrack with roots, foot bridges, over 4,000 feet elevation gain, minimal doubletrack, and frequent aid access

Eight out-and-back segments from a central hub, spanning Vero Beach and Sebastian, with tropical waters, jungles, rugged trails, and 22 bridge crossings

Scenic Finger Lakes hills and valleys, swamplands to hilltops, steep descents, gully rim trails, finishing at the culturally significant Great Hill

Approximately 3.4-mile trail loop at Windsor Castle Park with 150 feet of elevation gain per lap, self-aided format, and a relaxed summer atmosphere

1.776-mile loop through historic Putnam Memorial State Park, featuring multiple timed race options in a landscape tied to Revolutionary War history

Point-to-point route from Ellsworth to Eastport across Down East Maine, featuring demanding terrain and views of the region’s distinctive landscapes

Six-hour endurance format at Greenbury Point, with Chesapeake Bay waterfront views and an exposed coastal setting.

Technical 55K route on the Northville Placid Trail through remote Adirondack wilderness, 3,300 feet of elevation gain, fully self-supported format

Rugged 50 km route through the southern Massanutten Mountains, tracing the area's industrial heritage near historic Catherine Furnace.

Randomly assigned trail loops across South Mountain Reservation, strategic decisions at dusk, and unpredictable routes inspired by the TommyKnocker Ultra

Sugar sand dunes of coastal southeast Florida, mini-game style challenges, 24-hour and half marathon options, peak summer heat, varied difficulty levels

Scenic trail courses in Canandaigua featuring 100-mile and 50-mile ultrarunning challenges