| Montesarchio to Oerlinghausen | 804.10 mi (1,294.07 km) |
| Montesarchio to Oestrich-Winkel | 695.07 mi (1,118.61 km) |
| Montesarchio to Offenburg | 607.28 mi (977.32 km) |
| Montesarchio to Oftersheim | 644.35 mi (1,036.98 km) |
| Montesarchio to Ohrdruf | 699.73 mi (1,126.11 km) |
| Montesarchio to Ohringen | 614.78 mi (989.39 km) |
| Montesarchio to Olbernhau | 666.21 mi (1,072.16 km) |
| Montesarchio to Olching | 519.01 mi (835.26 km) |
| Montesarchio to Oldenburg | 886.50 mi (1,426.69 km) |
| Montesarchio to Oldenburg in Holstein | 930.48 mi (1,497.47 km) |
| Montesarchio to Olfen | 811.95 mi (1,306.71 km) |
| Montesarchio to Olpe | 760.12 mi (1,223.30 km) |
| Montesarchio to Olsberg | 768.28 mi (1,236.43 km) |
| Montesarchio to Oranienburg | 810.19 mi (1,303.87 km) |
| Montesarchio to Ortenberg | 695.46 mi (1,119.23 km) |
