Intermediate ultramarathons in United States

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 Sammamish River Trail out-and-back with steep early descent, bridge crossing, fields at 60 Acres Park, and multiple parkway turns

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

Technical single track climbs on Bells Mountain, stream crossings, waterfalls, and views of Mt. St. Helens along the Tarbell Trail to Moulton Falls Arch Bridge.

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

Scenic waterfront course from Magnolia to Lincoln Park, blending trails and urban routes with views of Elliott Bay, Myrtle Edwards Park, and city landmarks

High-altitude trails above 10,000 feet through alpine meadows, ghost towns, and mining relics, with sweeping views of the South Park Valley and Decalibron peaks

Night race on runnable jeep roads and technical terrain at Twin Mountains Offroad Park, with frequent loops and hot, humid conditions.

High desert landscape with intense heat, steep gulches, massive rock hoodoos, significant elevation changes, and dry, challenging terrain

Rugged, moderately difficult out-and-back laps on an unpaved rail trail with 1000 feet elevation change per lap and uneven terrain.

Rugged 50-mile mountain route along the Gallatin Crest with significant elevation gain, technical exposed terrain, and rapidly changing weather.

Continental Divide National Scenic Trail route, high-elevation mountain terrain, technical sections, skree fields, diverse climbs and descents

High-altitude 50-mile out-and-back over dirt, rocks, and mud with challenging climbs, fast descents, and views of Leadville’s historic mining district

50-mile out-and-back on the Pacific Crest Trail, shaded forest canopy, soft yet technical terrain, 5,630 feet of elevation gain, mountain views

Rugged 100-kilometer course through the wild trails of the Alleghenies, rocky ridges, sparse aid stations, and punishing midsummer heat

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

Tough and unpredictable trail course with a mix of out-and-back segments and loops on mostly clockwise routes at Devil's Lake

Night trail route through rugged hills and dry southern terrain under a vast starry sky at South Llano River State Park

Challenging 100k course on the Pacific Crest Trail through Siskiyou Mountains, with Mt. Shasta and Cascades vistas highlighting Ashland's terrain

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