August ultramarathons in United States (Mid-Atlantic)

Flat 3.75-mile paved loop at Cooper River Park with Philadelphia skyline and waterfront views, easy pit access, and some rubber track sections.

Flat .8-mile park loop with pavement or gravel options, timed format, personal gear area near start/finish, accessible terrain in Westfield, NJ

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

130-mile team relay through Adirondack landscapes from Gore Mountain to Saranac Brewery, passing Old Forge with an overnight camp

Team relay from Gore Mountain or Old Forge through the ADK Region to Saranac Brewery, featuring road and scenic segments with overnight camping option.

Flat out-and-back course on the Dahlgren Railroad Heritage Trail with dirt, gravel, and pine needle surfaces under continuous tree shade

Technical sections on High Rocks Spur and Boundary Trail loop, featuring challenging and varied terrain through Crystal Springs Recreation Area

103-mile loop through Pine Creek Gorge and the Grand Canyon of Pennsylvania, with over 20,000 feet of climbing, rugged singletrack, and remote wilderness trails

Gentle dirt loop through tranquil woods and along the historic Murderkill River, featuring sandy paths, single-track sections, and a footbridge crossing

Flat, 1.5-mile unpaved loop through tree-lined trails and lakeside scenery at Oak Grove Lake Park, featuring wildlife and a single aid station

Low-key, no-cost ultrarun with limited participants and community-supplied aid stations near the start and finish area

Five-hour solo ultramarathon on a looped course at Charlestown Park, with night running and on-site provisions for participants

Primarily flat, smooth rail trail out-and-back with roots and bog boards along the Dahlgren Railroad Heritage Trail

3.1-mile loop through woodland, prairie, oak savanna and wetlands; mostly flat to gently rolling with firm footing and a centralized aid station

Technical 50k trail course with 4,000 ft of elevation gain, forest shade, rock scrambles, single-track, stream crossings, and mountain bike trails near baltimor

Single-track 10K loop with 850 feet of elevation gain, creek crossings, waterfalls, and Blue Ridge mountain views along the Shenandoah River

Flat, scenic miles along the historic Erie Canal towpath, starting at Wide Water’s Marina and crossing Lockport’s draw bridges