| Gelves to Orbetello | 976.99 mi (1,572.32 km) |
| Gelves to Oria | 1,286.07 mi (2,069.73 km) |
| Gelves to Oristano | 807.38 mi (1,299.35 km) |
| Gelves to Orta Nova | 1,190.17 mi (1,915.39 km) |
| Gelves to Orte | 1,035.25 mi (1,666.08 km) |
| Gelves to Ortona | 1,133.96 mi (1,824.94 km) |
| Gelves to Orvieto | 1,026.14 mi (1,651.41 km) |
| Gelves to Orzinuovi | 994.48 mi (1,600.47 km) |
| Gelves to Osimo | 1,107.04 mi (1,781.62 km) |
| Gelves to Ospitaletto | 1,005.58 mi (1,618.32 km) |
| Gelves to Ostuni | 1,284.15 mi (2,066.64 km) |
| Gelves to Ottaviano | 1,122.77 mi (1,806.92 km) |
| Gelves to Ovada | 914.18 mi (1,471.23 km) |
| Gelves to Ozieri | 836.47 mi (1,346.17 km) |
| Gelves to Paceco | 1,014.89 mi (1,633.31 km) |
