The trip from Herndon to Rehoboth Beach is a straightforward drive across Maryland and Delaware. You can take I-495 to US-50 East, then DE-1 North, which takes about 3 to 3.5 hours. Rehoboth Beach is a popular coastal destination with a charming boardwalk.
Total Distance: 220 km driving distance; 180 km straight-line air distance.
Expect heavy traffic on US-50 during summer weekends.
June to August for beach weather.