| Potenza Picena to Oerlinghausen | 636.90 mi (1,025.00 km) |
| Potenza Picena to Oestrich-Winkel | 529.68 mi (852.43 km) |
| Potenza Picena to Offenburg | 445.61 mi (717.13 km) |
| Potenza Picena to Oftersheim | 478.95 mi (770.79 km) |
| Potenza Picena to Ohrdruf | 532.97 mi (857.73 km) |
| Potenza Picena to Ohringen | 448.25 mi (721.40 km) |
| Potenza Picena to Olbernhau | 504.56 mi (812.01 km) |
| Potenza Picena to Olching | 351.81 mi (566.19 km) |
| Potenza Picena to Oldenburg | 719.30 mi (1,157.59 km) |
| Potenza Picena to Oldenburg in Holstein | 765.43 mi (1,231.83 km) |
| Potenza Picena to Olfen | 645.48 mi (1,038.80 km) |
| Potenza Picena to Olpe | 593.79 mi (955.62 km) |
| Potenza Picena to Olsberg | 601.28 mi (967.67 km) |
| Potenza Picena to Oranienburg | 648.86 mi (1,044.24 km) |
| Potenza Picena to Ortenberg | 528.55 mi (850.62 km) |
