| Brandywine Valley National Scenic Byway |
| Harriet Tubman Underground Railroad Byway, NB |
| Harriet Tubman Underground Railroad Byway, SB |
| Lewes Scenic and Historic Byway |
| Nanticoke Heritage Byway |
| Red Clay Valley Scenic Byway |
| The Delaware Bayshore Byway |
| Washington Rochambeau Revolutionary Route Bike-Ped (National Historic Trail; not a State Byway) |
| Washington Rochambeau Revolutionary Route NB (National Historic Trail; not a State Byway) |
| Washington Rochambeau Revolutionary Route SB (National Historic Trail; not a State Byway) |