| Roma to Oerlinghausen | 5,490.20 mi (8,835.62 km) |
| Roma to Oestrich-Winkel | 5,532.32 mi (8,903.40 km) |
| Roma to Offenburg | 5,582.18 mi (8,983.66 km) |
| Roma to Oftersheim | 5,576.64 mi (8,974.73 km) |
| Roma to Ohrdruf | 5,606.91 mi (9,023.44 km) |
| Roma to Ohringen | 5,618.17 mi (9,041.57 km) |
| Roma to Olbernhau | 5,708.87 mi (9,187.53 km) |
| Roma to Olching | 5,724.90 mi (9,213.33 km) |
| Roma to Oldenburg | 5,433.58 mi (8,744.50 km) |
| Roma to Oldenburg in Holstein | 5,487.84 mi (8,831.82 km) |
| Roma to Olfen | 5,450.90 mi (8,772.37 km) |
| Roma to Olpe | 5,491.38 mi (8,837.53 km) |
| Roma to Olsberg | 5,504.52 mi (8,858.68 km) |
| Roma to Oranienburg | 5,626.43 mi (9,054.86 km) |
| Roma to Ortenberg | 5,560.50 mi (8,948.76 km) |
