12hr ultramarathons in United States (Mid-Atlantic)

Rolling grassy hills on a compact cross country loop with team relay format, dusk headlamps required, and awards for most laps completed

1.07-mile loop course with cross-country terrain, paved and unpaved sections, rolling hills, and natural obstacles like divots and tire tracks

Timed ultramarathon featuring 12-hour and 24-hour options on a one-mile loop with full aid station support and space for personal setups

Randomly assigned trail loops across South Mountain Reservation, strategic decisions at dusk, and unpredictable routes inspired by the TommyKnocker Ultra

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

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

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

3.7-mile loop on Warhill Nature Trail with crushed gravel, rolling hills, evening-to-morning hours, night running, and mandatory volunteer hour

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

5-mile loop at Camp Mack with 876 feet of elevation gain, combining wide track, single track, dirt, and gravel; course reverses direction during the event

Scenic 4-mile loop with 500 feet of elevation gain per lap in Sugar Hill State Forest, featuring rolling woodland terrain and Fire Tower Area views

12-hour ultrarun on a 5-mile loop with 95% rustic single and double track, slight elevations, flat stretches, flexible pacing, aid stations, and tent areas

Scenic loop course through woodlands and fields, quasi-technical trails with 300 feet elevation gain per loop, wooden bridges, and stream crossings

Technical single-track and double-track trails along Unami Creek, with rocks, roots, mud, varied elevation, and scenic woodland terrain at Camp Hart.

One-mile grass and trail loop with minimal elevation at a reindeer farm; reindeer, chickens, and maple trees add to the unique farm scenery.

Set distance trail loops over 24 or 12 hours, festival atmosphere, support stations, belt buckle awards for 100+ mile finishers