| Monte San Pietro to Oerlinghausen | 531.67 mi (855.63 km) |
| Monte San Pietro to Oestrich-Winkel | 411.19 mi (661.75 km) |
| Monte San Pietro to Offenburg | 317.54 mi (511.04 km) |
| Monte San Pietro to Oftersheim | 361.11 mi (581.15 km) |
| Monte San Pietro to Ohrdruf | 440.68 mi (709.20 km) |
| Monte San Pietro to Ohringen | 337.33 mi (542.88 km) |
| Monte San Pietro to Olbernhau | 440.33 mi (708.65 km) |
| Monte San Pietro to Olching | 258.62 mi (416.21 km) |
| Monte San Pietro to Oldenburg | 615.19 mi (990.06 km) |
| Monte San Pietro to Oldenburg in Holstein | 680.18 mi (1,094.64 km) |
| Monte San Pietro to Olfen | 531.37 mi (855.16 km) |
| Monte San Pietro to Olpe | 479.27 mi (771.31 km) |
| Monte San Pietro to Olsberg | 492.45 mi (792.51 km) |
| Monte San Pietro to Oranienburg | 580.69 mi (934.53 km) |
| Monte San Pietro to Ortenberg | 419.61 mi (675.30 km) |
