| Castel Bolognese to Oschatz | 486.30 mi (782.62 km) |
| Castel Bolognese to Oschersleben | 532.62 mi (857.17 km) |
| Castel Bolognese to Osnabruck | 576.59 mi (927.93 km) |
| Castel Bolognese to Ostbevern | 563.58 mi (906.99 km) |
| Castel Bolognese to Osterburg | 584.99 mi (941.45 km) |
| Castel Bolognese to Ostercappeln | 578.53 mi (931.06 km) |
| Castel Bolognese to Osterhofen | 308.48 mi (496.45 km) |
| Castel Bolognese to Osterholz-Scharmbeck | 629.78 mi (1,013.53 km) |
| Castel Bolognese to Osternienburg | 517.14 mi (832.26 km) |
| Castel Bolognese to Osterode | 517.05 mi (832.11 km) |
| Castel Bolognese to Osterwieck | 530.90 mi (854.40 km) |
| Castel Bolognese to Ostfildern | 328.30 mi (528.35 km) |
| Castel Bolognese to Osthofen | 406.69 mi (654.50 km) |
| Castel Bolognese to Ostrhauderfehn | 636.94 mi (1,025.06 km) |
| Castel Bolognese to Ostringen | 368.86 mi (593.63 km) |
