| Delaware to Roy (Utah) | 1,511.31 mi (2,432.22 km) |
| Delaware to Royal Kunia (Hawaii) | 4,501.16 mi (7,243.91 km) |
| Delaware to Royal Oak (Michigan) | 153.67 mi (247.31 km) |
| Delaware to Royal Palm Beach (Florida) | 952.48 mi (1,532.87 km) |
| Delaware to Royse City (Texas) | 889.62 mi (1,431.71 km) |
| Delaware to Ruskin (Florida) | 869.89 mi (1,399.96 km) |
| Delaware to Russellville (Alabama) | 473.89 mi (762.65 km) |
| Delaware to Russellville (Arkansas) | 648.84 mi (1,044.21 km) |
| Delaware to Ruston (Louisiana) | 753.83 mi (1,213.17 km) |
| Delaware to Rutherford (New Jersey) | 472.06 mi (759.71 km) |
| Delaware to Rutland (Vermont) | 566.87 mi (912.30 km) |
| Delaware to Sabana Grande (Puerto Rico) | 1,809.13 mi (2,911.51 km) |
| Delaware to Sachse (Texas) | 901.71 mi (1,451.17 km) |
| Delaware to Saco (Maine) | 685.49 mi (1,103.19 km) |
| Delaware to Sacramento (California) | 2,036.50 mi (3,277.44 km) |
