Winter ultramarathons in Maryland, United States

Gentle rolling terrain, short steep climbs, and scenic woodland singletrack, with brief road and open-field sections.

Self-supported endurance run on an unmarked course, following a no-fees, no-aid, no-awards philosophy in support of Annapolis Light House Shelter

Six-loop 50k course on scenic wooded trails at Rockburn Branch Park, solo or relay, with flexible team and distance options.

Aid-supported overnight 50k through secretive routes, immediately followed by the Algonquin 50k for a combined 100k+ challenge

Scenic, flat 50k route through Chesapeake and Pocomoke forests on Maryland's Eastern Shore, 95% trails with single-track and wide paths

Shaded 4.3-mile singletrack loop in Little Bennett Regional Park, with 5- and 9-hour timed formats and on-course aid station in Clarksburg, MD

Varied 50 km course with singletrack, woods roads, fields, gravel and brief asphalt through forest, meadows and farmland views.

Single track dirt paths and gravel roads circling Saint Mary's Lake, forested scenery, 10.5-mile loop, about 500 feet of elevation gain per lap