| Piraziz to Orbetello | 1,387.14 mi (2,232.38 km) |
| Piraziz to Oria | 1,071.52 mi (1,724.44 km) |
| Piraziz to Oristano | 1,548.17 mi (2,491.54 km) |
| Piraziz to Orta Nova | 1,163.92 mi (1,873.15 km) |
| Piraziz to Orte | 1,327.38 mi (2,136.20 km) |
| Piraziz to Ortona | 1,225.37 mi (1,972.03 km) |
| Piraziz to Orvieto | 1,340.16 mi (2,156.79 km) |
| Piraziz to Orzinuovi | 1,446.33 mi (2,327.64 km) |
| Piraziz to Osimo | 1,269.03 mi (2,042.31 km) |
| Piraziz to Ospitaletto | 1,440.02 mi (2,317.49 km) |
| Piraziz to Ostuni | 1,071.90 mi (1,725.06 km) |
| Piraziz to Ottaviano | 1,231.79 mi (1,982.37 km) |
| Piraziz to Ovada | 1,508.44 mi (2,427.60 km) |
| Piraziz to Ozieri | 1,517.62 mi (2,442.38 km) |
| Piraziz to Paceco | 1,374.87 mi (2,212.64 km) |
