| Attard to Oerlinghausen | 1,146.22 mi (1,844.66 km) |
| Attard to Oestrich-Winkel | 1,026.70 mi (1,652.31 km) |
| Attard to Offenburg | 929.57 mi (1,495.99 km) |
| Attard to Oftersheim | 976.85 mi (1,572.09 km) |
| Attard to Ohrdruf | 1,048.24 mi (1,686.97 km) |
| Attard to Ohringen | 952.65 mi (1,533.13 km) |
| Attard to Olbernhau | 1,022.26 mi (1,645.17 km) |
| Attard to Olching | 865.10 mi (1,392.24 km) |
| Attard to Oldenburg | 1,229.60 mi (1,978.85 km) |
| Attard to Oldenburg in Holstein | 1,283.17 mi (2,065.06 km) |
| Attard to Olfen | 1,147.20 mi (1,846.24 km) |
| Attard to Olpe | 1,095.11 mi (1,762.41 km) |
| Attard to Olsberg | 1,107.82 mi (1,782.86 km) |
| Attard to Oranienburg | 1,166.49 mi (1,877.29 km) |
| Attard to Ortenberg | 1,034.81 mi (1,665.37 km) |
