February ultramarathons in Maryland, United States

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