September ultramarathons in United States (New England)

Technical 50K course in Camden Hills with over 7,600 feet of climbing, six major peaks, rugged trails, stream crossings, and panoramic vistas

Mostly flat 50K and 50-mile courses on scenic New England trails at DCR Great Brook Farm State Park, featuring roots, rocks, and fall foliage.

Flat and non-technical twelve-loop 50k course around rural Cherry Hill Farm in Gorham, Maine

Scenic forested loops at Pineland Farms, 4.2-mile double-track trails with moderate elevation changes

Double-loop figure-eight 50K in Pittsfield State Forest, with substantial climbing, fast descents, Taconic Crest Trail, and sweeping vistas.

56-mile north-to-south route on the Farmington Canal Heritage Trail, with flat terrain and rural, suburban, and urban sections.

Rugged 50K course through Camden Hills State Park with steep climbs to Mount Megunticook, offering views of Penobscot Bay and the Atlantic Ocean

Lush singletrack trails, steep climbs, and wild blueberry fields within Bear Brook State Park; variable ultramarathon distances revealed before race day

50K trail race centered on Pisgah State Park in Chesterfield, New Hampshire, with scenic park surroundings and a community-focused atmosphere.

Three-loop 50K course featuring rugged singletrack, multiple climbs over Cobble Mountain, more than 7,000 feet of elevation gain, and scenic park views.

Demanding 50K at Bradbury Mountain State Park, with classic Maine singletrack, steep hills, rocks, roots, and very little flat running.

204-mile relay from Lancaster to Hampton Beach via the White Mountains, Lake Winnipesaukee, and classic New England towns

200-mile team relay from northern New Hampshire mountains to Hampton Beach, with rotating road segments, changing scenery, and a beach finish

50-mile route along the Kilkenny Ridge Trail through remote White Mountain National Forest, featuring 15,000 feet of ascent and summits like Cabot and Waumbek

Out-and-back 50 miler from the Lincoln Loon heading south, with a straightforward course and a relaxed, community-centered finish at Prince Thomas Park.

Scenic 1.9-mile groomed loop at Notchview with self-timed laps, access to aid station, and options for 50km, 50-mile, or 24-hour challenges

Looped 4.167-mile course through Needham town forest and Rail Trail, starting hourly from Claxton Field Quarry with no road crossings

Scenic dirt trails and conservation lands at Wolfe's Neck Center, with bridges, stairs, and tree roots across 5-mile loops; single aid station at start/finish.