| Montesarchio to Oria | 161.75 mi (260.31 km) |
| Montesarchio to Oristano | 327.39 mi (526.88 km) |
| Montesarchio to Orta Nova | 58.94 mi (94.86 km) |
| Montesarchio to Orte | 150.60 mi (242.37 km) |
| Montesarchio to Ortona | 89.48 mi (144.00 km) |
| Montesarchio to Orvieto | 172.79 mi (278.08 km) |
| Montesarchio to Orzinuovi | 381.45 mi (613.89 km) |
| Montesarchio to Osimo | 177.01 mi (284.88 km) |
| Montesarchio to Ospitaletto | 385.52 mi (620.44 km) |
| Montesarchio to Ostuni | 155.77 mi (250.68 km) |
| Montesarchio to Ottaviano | 17.04 mi (27.42 km) |
| Montesarchio to Ovada | 390.82 mi (628.97 km) |
| Montesarchio to Ozieri | 296.18 mi (476.65 km) |
| Montesarchio to Paceco | 240.22 mi (386.59 km) |
| Montesarchio to Pachino | 301.60 mi (485.38 km) |
