| Prudhoe to Oerlinghausen | 478.84 mi (770.61 km) |
| Prudhoe to Oestrich-Winkel | 536.97 mi (864.17 km) |
| Prudhoe to Offenburg | 612.67 mi (985.99 km) |
| Prudhoe to Oftersheim | 586.05 mi (943.16 km) |
| Prudhoe to Ohrdruf | 595.93 mi (959.06 km) |
| Prudhoe to Ohringen | 623.72 mi (1,003.78 km) |
| Prudhoe to Olbernhau | 698.11 mi (1,123.50 km) |
| Prudhoe to Olching | 731.27 mi (1,176.86 km) |
| Prudhoe to Oldenburg | 426.59 mi (686.54 km) |
| Prudhoe to Oldenburg in Holstein | 510.55 mi (821.65 km) |
| Prudhoe to Olfen | 441.43 mi (710.41 km) |
| Prudhoe to Olpe | 485.59 mi (781.48 km) |
| Prudhoe to Olsberg | 494.77 mi (796.26 km) |
| Prudhoe to Oranienburg | 632.01 mi (1,017.13 km) |
| Prudhoe to Ortenberg | 555.88 mi (894.60 km) |
