| Wilmington to Oerlinghausen | 4,265.83 mi (6,865.19 km) |
| Wilmington to Oestrich-Winkel | 4,286.70 mi (6,898.78 km) |
| Wilmington to Offenburg | 4,322.41 mi (6,956.24 km) |
| Wilmington to Oftersheim | 4,326.85 mi (6,963.40 km) |
| Wilmington to Ohrdruf | 4,377.44 mi (7,044.81 km) |
| Wilmington to Ohringen | 4,369.52 mi (7,032.06 km) |
| Wilmington to Olbernhau | 4,486.31 mi (7,220.02 km) |
| Wilmington to Olching | 4,472.82 mi (7,198.31 km) |
| Wilmington to Oldenburg | 4,220.18 mi (6,791.73 km) |
| Wilmington to Oldenburg in Holstein | 4,295.15 mi (6,912.38 km) |
| Wilmington to Olfen | 4,220.28 mi (6,791.89 km) |
| Wilmington to Olpe | 4,255.07 mi (6,847.88 km) |
| Wilmington to Olsberg | 4,273.39 mi (6,877.36 km) |
| Wilmington to Oranienburg | 4,424.73 mi (7,120.91 km) |
| Wilmington to Ortenberg | 4,321.34 mi (6,954.52 km) |
