| Marsciano to Octeville | 810.67 mi (1,304.65 km) |
| Marsciano to Oignies | 683.19 mi (1,099.49 km) |
| Marsciano to Oissel | 696.48 mi (1,120.87 km) |
| Marsciano to Olivet | 609.99 mi (981.69 km) |
| Marsciano to Ollioules | 327.90 mi (527.70 km) |
| Marsciano to Olonne-sur-Mer | 734.98 mi (1,182.84 km) |
| Marsciano to Oloron-Sainte-Marie | 652.92 mi (1,050.77 km) |
| Marsciano to Onet Village | 496.86 mi (799.62 km) |
| Marsciano to Onnaing | 660.95 mi (1,063.70 km) |
| Marsciano to Orange | 386.08 mi (621.34 km) |
| Marsciano to Orchies | 675.90 mi (1,087.75 km) |
| Marsciano to Orleans | 611.00 mi (983.31 km) |
| Marsciano to Orly | 624.51 mi (1,005.05 km) |
| Marsciano to Ormesson-sur-Marne | 620.93 mi (999.29 km) |
| Marsciano to Orsay | 630.22 mi (1,014.24 km) |
