50K ultramarathons in United States (Northeast) in 2026

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

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

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

50K on the scenic West Rim Trail with an early dark start, minimal aid, and a challenging out-and-back route to Bradley Wales

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.

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

Gnarly single track and fast double track across Central Pennsylvania’s rugged Allegheny Front, steep climbs, demanding descents, and sweeping ridge views

Three-day, 75-mile stage race on the SRKG Greenway with 15,500 feet of elevation gain, technical single-track, steep climbs, and lakeside scenery

Figure-eight loops on rugged mountain trails, wildflower fields and dense forests, panoramic coastal views, community gathering at the Mountain Field

Rugged southern trails with radical elevation changes, tough terrain, creek crossings, swamps, rocks, and roots at Newbsanity Adventure Center

Trail race against horses over single track, gravel roads, and grassy meadows, featuring 20k, 50k, and 50-mile distances in Steel City.

Wooded trails through Ward Pound Ridge Reservation, technical singletrack and carriage roads, 50K with 4,000 ft or 50-mile with 7,000 ft elevation gain

10-mile singletrack loop through Noon Hill Reservation, diverse terrain and minimal road crossings, near Boston yet set in immersive woodlands

Mix of fast dirt roads and technical singletrack with long climbs, flowy descents, and lake views through Fahnestock State Park in the Hudson Valley

Three challenging loops on rugged Maine trails, featuring increasingly difficult terrain and a demanding final lap

Scenic lakeside loops on well-maintained trails and dirt roads, steady flat sections with occasional roots, plus upland forest and meadow circuits with varied,

Challenging marathon and 50K courses through Thacher Park’s tranquil north and south trails, featuring escarpment climbs and scenic loops

Mountainous 50K route across Snow's Mountain, East Osceola, Osceola, and Tecumseh, 7,700 feet of elevation gain, scenic trails, multiple aid stations

Five-loop 50K course with over 7,000 feet of elevation gain, steep climbs, technical descents, and fast singletrack through old-growth Pennsylvania forest.