Greenbelt Park loop from Berwyn Heights

Western Ridge Trail loop via Valley Trail — Rock Creek Park

Four Mile Run Park

Sligo Creek Trail to Sligo-Bennington Neighborhood Park

Cabin John Trail Loop — Cabin John Regional Park

South Shore Trail — Millersville

Washington Monument – Washington Monument loop from Metro Center

Cash Lake Trail loop — Patuxent Research Refuge

Forest Trail loop — Patuxent Research Refuge

Lincoln Memorial – Washington Monument loop from Eastern Market

Washington Monument – White House loop from Farragut West

Washington Monument – Lincoln Memorial loop from Foggy Bottom–GWU

Lincoln Memorial – Washington Monument loop from Pentagon