| Gragnano to Novi di Modena | 342.99 mi (551.99 km) |
| Gragnano to Novi Ligure | 404.03 mi (650.23 km) |
| Gragnano to Nuoro | 273.45 mi (440.08 km) |
| Gragnano to Occhiobello | 327.62 mi (527.26 km) |
| Gragnano to Oderzo | 365.76 mi (588.64 km) |
| Gragnano to Oggiono | 437.01 mi (703.30 km) |
| Gragnano to Olbia | 262.71 mi (422.78 km) |
| Gragnano to Oleggio | 450.01 mi (724.23 km) |
| Gragnano to Olgiate Comasco | 448.72 mi (722.15 km) |
| Gragnano to Olgiate Olona | 443.55 mi (713.83 km) |
| Gragnano to Omegna | 471.51 mi (758.83 km) |
| Gragnano to Opera | 419.92 mi (675.79 km) |
| Gragnano to Oppeano | 359.86 mi (579.14 km) |
| Gragnano to Orbassano | 461.97 mi (743.47 km) |
| Gragnano to Orbetello | 208.94 mi (336.26 km) |
