| Tortoreto to Oerlinghausen | 678.86 mi (1,092.53 km) |
| Tortoreto to Oestrich-Winkel | 571.37 mi (919.54 km) |
| Tortoreto to Offenburg | 486.36 mi (782.71 km) |
| Tortoreto to Oftersheim | 520.64 mi (837.89 km) |
| Tortoreto to Ohrdruf | 574.61 mi (924.75 km) |
| Tortoreto to Ohringen | 490.17 mi (788.85 km) |
| Tortoreto to Olbernhau | 544.23 mi (875.86 km) |
| Tortoreto to Olching | 393.71 mi (633.62 km) |
| Tortoreto to Oldenburg | 761.22 mi (1,225.07 km) |
| Tortoreto to Oldenburg in Holstein | 806.40 mi (1,297.77 km) |
| Tortoreto to Olfen | 687.40 mi (1,106.26 km) |
| Tortoreto to Olpe | 635.68 mi (1,023.03 km) |
| Tortoreto to Olsberg | 643.26 mi (1,035.22 km) |
| Tortoreto to Oranienburg | 688.50 mi (1,108.03 km) |
| Tortoreto to Ortenberg | 570.52 mi (918.16 km) |
