| Plympton to Orbetello | 908.21 mi (1,461.63 km) |
| Plympton to Oria | 1,246.44 mi (2,005.95 km) |
| Plympton to Oristano | 948.08 mi (1,525.79 km) |
| Plympton to Orta Nova | 1,132.80 mi (1,823.06 km) |
| Plympton to Orte | 952.01 mi (1,532.12 km) |
| Plympton to Ortona | 1,035.92 mi (1,667.16 km) |
| Plympton to Orvieto | 929.77 mi (1,496.31 km) |
| Plympton to Orzinuovi | 732.14 mi (1,178.26 km) |
| Plympton to Osimo | 951.46 mi (1,531.23 km) |
| Plympton to Ospitaletto | 732.06 mi (1,178.14 km) |
| Plympton to Ostuni | 1,234.03 mi (1,985.98 km) |
| Plympton to Ottaviano | 1,106.64 mi (1,780.97 km) |
| Plympton to Ovada | 711.80 mi (1,145.53 km) |
| Plympton to Ozieri | 923.89 mi (1,486.86 km) |
| Plympton to Paceco | 1,182.56 mi (1,903.14 km) |
