The state highway runs 6.92 miles (11.14 km) from MD 349 in Quantico north to U.S. Route 50 (US 50) in Hebron.

The state highway heads north as two-lane undivided Quantico Road past scattered residences and runs east of Westside Primary School.

The state highway leaves Quantico after a sharp turn to the northeast at Old Athol Road and passes through farmland.

Upon arriving in the town of Hebron, the highway passes southeast of Westside Intermediate School and the historic home St. Giles.

After leaving Hebron, the state highway continues northeast as Hebron Road, crossing Rewastico Creek before reaching its northern terminus at US 50 (Ocean Gateway).