| Delaware to Oxford (Alabama) | 487.13 mi (783.97 km) |
| Delaware to Oxford (Mississippi) | 541.34 mi (871.20 km) |
| Delaware to Oxford (Ohio) | 103.62 mi (166.77 km) |
| Delaware to Oxnard (California) | 2,015.58 mi (3,243.77 km) |
| Delaware to Oxon Hill (Maryland) | 341.08 mi (548.92 km) |
| Delaware to Ozark (Alabama) | 627.08 mi (1,009.19 km) |
| Delaware to Ozark (Missouri) | 590.96 mi (951.05 km) |
| Delaware to Pace (Florida) | 706.25 mi (1,136.60 km) |
| Delaware to Pacific Grove (California) | 2,100.53 mi (3,380.48 km) |
| Delaware to Pacifica (California) | 2,107.98 mi (3,392.47 km) |
| Delaware to Paducah (Kentucky) | 373.47 mi (601.04 km) |
| Delaware to Pahrump (Nevada) | 1,797.68 mi (2,893.08 km) |
| Delaware to Painesville (Ohio) | 137.45 mi (221.21 km) |
| Delaware to Palatine (Illinois) | 287.62 mi (462.88 km) |
| Delaware to Palatka (Florida) | 739.12 mi (1,189.49 km) |
