October ultramarathons in New Hampshire, United States

Forested 4-mile singletrack loop with rolling terrain, snowmobile trails, fields, rugged logging roads, and 300 feet of elevation gain per lap

Historic Midstate Trail routes through mountains, fields, and river crossings, with border crossings and New England autumn scenery

Historic rail trail through New Hampshire forests, autumn foliage tunnels, weathered railway remnants, and night miles steeped in lore and legend