| Boscoreale to Oerlinghausen | 821.37 mi (1,321.87 km) |
| Boscoreale to Oestrich-Winkel | 710.67 mi (1,143.71 km) |
| Boscoreale to Offenburg | 621.41 mi (1,000.06 km) |
| Boscoreale to Oftersheim | 659.99 mi (1,062.15 km) |
| Boscoreale to Ohrdruf | 718.02 mi (1,155.54 km) |
| Boscoreale to Ohringen | 631.18 mi (1,015.78 km) |
| Boscoreale to Olbernhau | 686.25 mi (1,104.41 km) |
| Boscoreale to Olching | 536.66 mi (863.67 km) |
| Boscoreale to Oldenburg | 903.99 mi (1,454.83 km) |
| Boscoreale to Oldenburg in Holstein | 949.70 mi (1,528.40 km) |
| Boscoreale to Olfen | 828.21 mi (1,332.88 km) |
| Boscoreale to Olpe | 776.29 mi (1,249.31 km) |
| Boscoreale to Olsberg | 785.13 mi (1,263.54 km) |
| Boscoreale to Oranienburg | 830.33 mi (1,336.29 km) |
| Boscoreale to Ortenberg | 712.19 mi (1,146.17 km) |
