Relay ultramarathons in United States

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

Repeated 10K pine-forest circuit at Rocky Hill Ranch, with singletrack, rolling hills, intermittent shade, and long-format options from 50K to 200K.

Half-mile pine forest loop in Lowell Park, continuous 6, 12, or 24-hour format with self-supported setup and solo or team options

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.

Looped cross-country and single track trails with small hills at Mississippi College Choctaw Trails; intense heat and humidity expected

Flat 1.25-mile paved loop on a former military base with asphalt, concrete, a brief gravel section, and shady pine trees

Scenic alpine 10K loop with 1,546 feet of vertical gain per lap, technical trails through aspen groves and meadows at Powderhorn Mountain

Overnight looping relay and ultra at Kroger Field, with a paved course and a grassy, trail-like section for added variety.

Rolling, shaded 2.6-mile loop with cart paths, wooden bridges, waterfalls, and riverside views at Riverwest Nature Preserve; strict lap cutoffs in summer heat

Scenic Vermont course with 8 miles of road, 23 miles of rugged trails, over 5,000 feet of climbing, and varied landscapes through four towns.

24-hour relay on a scenic loop with a challenging hill at Veterans Park, focusing on endurance, teamwork, and a lively atmosphere

Night trail loops on undulating 3.2-mile course at Cedar Ridge Preserve, featuring wooded terrain, varying elevation, and multi-hour endurance format

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

Scenic routes through Cuyahoga Valley National Park and Summit Metro Parks on 100 and 50 mile courses

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

24-hour race on Blackhawk High School track with lap direction changes, hourly themes, live music performances, and relay or solo participation options

200-mile point-to-point course from Fort Collins to Steamboat Springs with mountain passes, open spaces, and road sections

Three-day team adventure across Montana’s rugged backcountry, unmarked relay exchange points, shifting wild terrain, and full self-support logistics

Paved point-to-point road ultra from Hilo to Waimea, with major early climbing, a long descent, and a tough exposed Saddle Road course