| Castel Bolognese to Oststeinbek | 641.81 mi (1,032.89 km) |
| Castel Bolognese to Ottendorf-Okrilla | 483.35 mi (777.88 km) |
| Castel Bolognese to Ottersberg | 618.66 mi (995.64 km) |
| Castel Bolognese to Ottobrunn | 259.18 mi (417.11 km) |
| Castel Bolognese to Ottweiler | 411.76 mi (662.66 km) |
| Castel Bolognese to Overath | 503.70 mi (810.63 km) |
| Castel Bolognese to Oyten | 617.24 mi (993.35 km) |
| Castel Bolognese to Paderborn | 530.28 mi (853.41 km) |
| Castel Bolognese to Papenburg | 636.69 mi (1,024.66 km) |
| Castel Bolognese to Parchim | 628.75 mi (1,011.88 km) |
| Castel Bolognese to Pasewalk | 642.24 mi (1,033.58 km) |
| Castel Bolognese to Passau | 304.65 mi (490.28 km) |
| Castel Bolognese to Pattensen | 557.13 mi (896.61 km) |
| Castel Bolognese to Pegnitz | 376.04 mi (605.17 km) |
| Castel Bolognese to Peine | 557.62 mi (897.41 km) |
