| Parnu to Oignies | 1,016.04 mi (1,635.15 km) |
| Parnu to Oissel | 1,131.04 mi (1,820.23 km) |
| Parnu to Olivet | 1,176.18 mi (1,892.87 km) |
| Parnu to Ollioules | 1,322.43 mi (2,128.24 km) |
| Parnu to Olonne-sur-Mer | 1,361.43 mi (2,191.01 km) |
| Parnu to Oloron-Sainte-Marie | 1,501.20 mi (2,415.95 km) |
| Parnu to Onet Village | 1,341.15 mi (2,158.37 km) |
| Parnu to Onnaing | 999.71 mi (1,608.87 km) |
| Parnu to Orange | 1,291.51 mi (2,078.48 km) |
| Parnu to Orchies | 1,007.46 mi (1,621.35 km) |
| Parnu to Orleans | 1,173.98 mi (1,889.33 km) |
| Parnu to Orly | 1,116.86 mi (1,797.41 km) |
| Parnu to Ormesson-sur-Marne | 1,110.12 mi (1,786.57 km) |
| Parnu to Orsay | 1,125.73 mi (1,811.68 km) |
| Parnu to Orthez | 1,490.02 mi (2,397.96 km) |
