| Tortoli to Oerlinghausen | 832.75 mi (1,340.18 km) |
| Tortoli to Oestrich-Winkel | 700.15 mi (1,126.79 km) |
| Tortoli to Offenburg | 595.66 mi (958.62 km) |
| Tortoli to Oftersheim | 654.13 mi (1,052.73 km) |
| Tortoli to Ohrdruf | 754.57 mi (1,214.36 km) |
| Tortoli to Ohringen | 640.31 mi (1,030.48 km) |
| Tortoli to Olbernhau | 762.65 mi (1,227.37 km) |
| Tortoli to Olching | 577.10 mi (928.75 km) |
| Tortoli to Oldenburg | 915.26 mi (1,472.97 km) |
| Tortoli to Oldenburg in Holstein | 994.30 mi (1,600.16 km) |
| Tortoli to Olfen | 821.33 mi (1,321.80 km) |
| Tortoli to Olpe | 770.77 mi (1,240.43 km) |
| Tortoli to Olsberg | 790.80 mi (1,272.67 km) |
| Tortoli to Oranienburg | 901.93 mi (1,451.51 km) |
| Tortoli to Ortenberg | 720.70 mi (1,159.86 km) |
