| Gujan-Mestras to Novi di Modena | 586.83 mi (944.41 km) |
| Gujan-Mestras to Novi Ligure | 483.66 mi (778.37 km) |
| Gujan-Mestras to Nuoro | 607.57 mi (977.79 km) |
| Gujan-Mestras to Occhiobello | 619.99 mi (997.78 km) |
| Gujan-Mestras to Oderzo | 663.95 mi (1,068.53 km) |
| Gujan-Mestras to Oggiono | 512.83 mi (825.32 km) |
| Gujan-Mestras to Olbia | 593.71 mi (955.49 km) |
| Gujan-Mestras to Oleggio | 477.29 mi (768.12 km) |
| Gujan-Mestras to Olgiate Comasco | 494.44 mi (795.72 km) |
| Gujan-Mestras to Olgiate Olona | 489.51 mi (787.80 km) |
| Gujan-Mestras to Omegna | 468.39 mi (753.79 km) |
| Gujan-Mestras to Opera | 504.62 mi (812.10 km) |
| Gujan-Mestras to Oppeano | 599.99 mi (965.59 km) |
| Gujan-Mestras to Orbassano | 422.22 mi (679.50 km) |
| Gujan-Mestras to Orbetello | 632.81 mi (1,018.40 km) |
