Sixes Road heads east as MD 506 toward Port Republic and west as a county highway toward the Patuxent River.

Adelina Road continues south as a county highway toward the unincorporated community of Adelina and the historic home Taney Place, which was the birthplace of Supreme Court Chief Justice Roger Taney.

MD 508 heads north as a two-lane undivided road through a forested area with scattered residences.

The state highway reaches its northern terminus at MD 231 (Hallowing Point Road) near Barstow.

[3][4] The southern terminus was rolled back to MD 506 in Bowens in 1957.