| Puenteareas to Orbetello | 1,005.24 mi (1,617.78 km) |
| Puenteareas to Oria | 1,355.38 mi (2,181.27 km) |
| Puenteareas to Oristano | 902.76 mi (1,452.85 km) |
| Puenteareas to Orta Nova | 1,245.21 mi (2,003.97 km) |
| Puenteareas to Orte | 1,064.62 mi (1,713.34 km) |
| Puenteareas to Ortona | 1,167.56 mi (1,879.01 km) |
| Puenteareas to Orvieto | 1,048.95 mi (1,688.13 km) |
| Puenteareas to Orzinuovi | 943.95 mi (1,519.14 km) |
| Puenteareas to Osimo | 1,114.46 mi (1,793.55 km) |
| Puenteareas to Ospitaletto | 952.06 mi (1,532.19 km) |
| Puenteareas to Ostuni | 1,349.15 mi (2,171.25 km) |
| Puenteareas to Ottaviano | 1,188.75 mi (1,913.11 km) |
| Puenteareas to Ovada | 875.79 mi (1,409.44 km) |
| Puenteareas to Ozieri | 912.42 mi (1,468.39 km) |
| Puenteareas to Paceco | 1,146.57 mi (1,845.22 km) |
