50K Summer ultramarathons in New Hampshire, United States

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

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

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