| Grottaglie to Oerlinghausen | 892.65 mi (1,436.58 km) |
| Grottaglie to Oestrich-Winkel | 797.54 mi (1,283.52 km) |
| Grottaglie to Offenburg | 719.74 mi (1,158.32 km) |
| Grottaglie to Oftersheim | 747.24 mi (1,202.57 km) |
| Grottaglie to Ohrdruf | 780.60 mi (1,256.26 km) |
| Grottaglie to Ohringen | 712.91 mi (1,147.31 km) |
| Grottaglie to Olbernhau | 727.37 mi (1,170.58 km) |
| Grottaglie to Olching | 609.35 mi (980.65 km) |
| Grottaglie to Oldenburg | 972.34 mi (1,564.83 km) |
| Grottaglie to Oldenburg in Holstein | 998.21 mi (1,606.46 km) |
| Grottaglie to Olfen | 908.43 mi (1,461.98 km) |
| Grottaglie to Olpe | 857.87 mi (1,380.61 km) |
| Grottaglie to Olsberg | 860.79 mi (1,385.31 km) |
| Grottaglie to Oranienburg | 867.16 mi (1,395.55 km) |
| Grottaglie to Ortenberg | 789.76 mi (1,271.00 km) |
