| Pontardulais to Orbetello | 958.51 mi (1,542.57 km) |
| Pontardulais to Oria | 1,287.09 mi (2,071.37 km) |
| Pontardulais to Oristano | 1,014.42 mi (1,632.56 km) |
| Pontardulais to Orta Nova | 1,175.16 mi (1,891.23 km) |
| Pontardulais to Orte | 998.82 mi (1,607.44 km) |
| Pontardulais to Ortona | 1,077.70 mi (1,734.39 km) |
| Pontardulais to Orvieto | 976.28 mi (1,571.17 km) |
| Pontardulais to Orzinuovi | 771.56 mi (1,241.71 km) |
| Pontardulais to Osimo | 990.75 mi (1,594.46 km) |
| Pontardulais to Ospitaletto | 770.08 mi (1,239.33 km) |
| Pontardulais to Ostuni | 1,274.00 mi (2,050.31 km) |
| Pontardulais to Ottaviano | 1,153.84 mi (1,856.93 km) |
| Pontardulais to Ovada | 759.95 mi (1,223.02 km) |
| Pontardulais to Ozieri | 987.21 mi (1,588.76 km) |
| Pontardulais to Paceco | 1,243.02 mi (2,000.45 km) |
