| Zagarolo to Noventa Vicentina | 247.09 mi (397.65 km) |
| Zagarolo to Novi di Modena | 232.63 mi (374.38 km) |
| Zagarolo to Novi Ligure | 286.81 mi (461.57 km) |
| Zagarolo to Nuoro | 210.25 mi (338.36 km) |
| Zagarolo to Occhiobello | 222.44 mi (357.99 km) |
| Zagarolo to Oderzo | 273.27 mi (439.79 km) |
| Zagarolo to Oggiono | 323.42 mi (520.50 km) |
| Zagarolo to Olbia | 184.05 mi (296.19 km) |
| Zagarolo to Oleggio | 334.15 mi (537.76 km) |
| Zagarolo to Olgiate Comasco | 334.05 mi (537.61 km) |
| Zagarolo to Olgiate Olona | 328.27 mi (528.30 km) |
| Zagarolo to Omegna | 355.88 mi (572.73 km) |
| Zagarolo to Opera | 304.72 mi (490.40 km) |
| Zagarolo to Oppeano | 253.35 mi (407.73 km) |
| Zagarolo to Orbassano | 344.46 mi (554.35 km) |
