| Monterotondo to Novi di Modena | 214.46 mi (345.13 km) |
| Monterotondo to Novi Ligure | 268.31 mi (431.81 km) |
| Monterotondo to Nuoro | 208.52 mi (335.59 km) |
| Monterotondo to Occhiobello | 205.08 mi (330.05 km) |
| Monterotondo to Oderzo | 257.85 mi (414.96 km) |
| Monterotondo to Oggiono | 304.85 mi (490.61 km) |
| Monterotondo to Olbia | 179.31 mi (288.57 km) |
| Monterotondo to Oleggio | 315.49 mi (507.74 km) |
| Monterotondo to Olgiate Comasco | 315.42 mi (507.62 km) |
| Monterotondo to Olgiate Olona | 309.62 mi (498.28 km) |
| Monterotondo to Omegna | 337.22 mi (542.71 km) |
| Monterotondo to Opera | 286.07 mi (460.39 km) |
| Monterotondo to Oppeano | 235.69 mi (379.31 km) |
| Monterotondo to Orbassano | 326.24 mi (525.03 km) |
| Monterotondo to Orbetello | 76.70 mi (123.43 km) |
