| Guipavas to Oria | 1,210.95 mi (1,948.83 km) |
| Guipavas to Oristano | 870.62 mi (1,401.12 km) |
| Guipavas to Orta Nova | 1,095.64 mi (1,763.26 km) |
| Guipavas to Orte | 909.73 mi (1,464.07 km) |
| Guipavas to Ortona | 1,000.93 mi (1,610.85 km) |
| Guipavas to Orvieto | 888.34 mi (1,429.64 km) |
| Guipavas to Orzinuovi | 706.99 mi (1,137.79 km) |
| Guipavas to Osimo | 921.88 mi (1,483.62 km) |
| Guipavas to Ospitaletto | 709.27 mi (1,141.46 km) |
| Guipavas to Ostuni | 1,199.77 mi (1,930.84 km) |
| Guipavas to Ottaviano | 1,061.64 mi (1,708.54 km) |
| Guipavas to Ovada | 672.15 mi (1,081.73 km) |
| Guipavas to Ozieri | 852.44 mi (1,371.86 km) |
| Guipavas to Paceco | 1,113.63 mi (1,792.21 km) |
| Guipavas to Pachino | 1,274.10 mi (2,050.46 km) |
