| Castelnuovo Rangone to Oerlinghausen | 522.87 mi (841.48 km) |
| Castelnuovo Rangone to Oestrich-Winkel | 400.80 mi (645.02 km) |
| Castelnuovo Rangone to Offenburg | 305.86 mi (492.23 km) |
| Castelnuovo Rangone to Oftersheim | 350.95 mi (564.81 km) |
| Castelnuovo Rangone to Ohrdruf | 433.87 mi (698.25 km) |
| Castelnuovo Rangone to Ohringen | 328.32 mi (528.38 km) |
| Castelnuovo Rangone to Olbernhau | 437.10 mi (703.44 km) |
| Castelnuovo Rangone to Olching | 252.85 mi (406.92 km) |
| Castelnuovo Rangone to Oldenburg | 606.40 mi (975.91 km) |
| Castelnuovo Rangone to Oldenburg in Holstein | 673.66 mi (1,084.16 km) |
| Castelnuovo Rangone to Olfen | 521.37 mi (839.06 km) |
| Castelnuovo Rangone to Olpe | 469.30 mi (755.27 km) |
| Castelnuovo Rangone to Olsberg | 483.25 mi (777.71 km) |
| Castelnuovo Rangone to Oranienburg | 576.46 mi (927.72 km) |
| Castelnuovo Rangone to Ortenberg | 410.59 mi (660.78 km) |
