 Its eastern terminus is DE 54 west of Fenwick Island.The route runs through rural areas of Sussex County and passes through the towns of Seaford, Millsboro, and Dagsboro.DE 20 intersects U.S. Route 13 (US 13) in Seaford, US 9 in Hardscrabble, US 113 and DE 24/DE 30 in Millsboro, DE 26 in Dagsboro, and DE 17 in Roxana.