| Castellaneta to Oerlinghausen | 875.55 mi (1,409.05 km) |
| Castellaneta to Oestrich-Winkel | 778.02 mi (1,252.10 km) |
| Castellaneta to Offenburg | 698.51 mi (1,124.15 km) |
| Castellaneta to Oftersheim | 727.57 mi (1,170.91 km) |
| Castellaneta to Ohrdruf | 764.57 mi (1,230.46 km) |
| Castellaneta to Ohringen | 693.93 mi (1,116.78 km) |
| Castellaneta to Olbernhau | 714.49 mi (1,149.85 km) |
| Castellaneta to Olching | 591.35 mi (951.69 km) |
| Castellaneta to Oldenburg | 955.79 mi (1,538.20 km) |
| Castellaneta to Oldenburg in Holstein | 984.75 mi (1,584.81 km) |
| Castellaneta to Olfen | 890.04 mi (1,432.38 km) |
| Castellaneta to Olpe | 839.20 mi (1,350.57 km) |
| Castellaneta to Olsberg | 842.99 mi (1,356.65 km) |
| Castellaneta to Oranienburg | 855.31 mi (1,376.50 km) |
| Castellaneta to Ortenberg | 771.55 mi (1,241.69 km) |
