| Peso da Regua to Octeville | 655.48 mi (1,054.89 km) |
| Peso da Regua to Oignies | 824.22 mi (1,326.45 km) |
| Peso da Regua to Oissel | 709.75 mi (1,142.23 km) |
| Peso da Regua to Olivet | 663.51 mi (1,067.81 km) |
| Peso da Regua to Ollioules | 710.19 mi (1,142.94 km) |
| Peso da Regua to Olonne-sur-Mer | 476.34 mi (766.60 km) |
| Peso da Regua to Oloron-Sainte-Marie | 392.79 mi (632.13 km) |
| Peso da Regua to Onet Village | 570.07 mi (917.43 km) |
| Peso da Regua to Onnaing | 838.62 mi (1,349.62 km) |
| Peso da Regua to Orange | 670.96 mi (1,079.81 km) |
| Peso da Regua to Orchies | 832.04 mi (1,339.04 km) |
| Peso da Regua to Orleans | 665.54 mi (1,071.09 km) |
| Peso da Regua to Orly | 720.87 mi (1,160.13 km) |
| Peso da Regua to Ormesson-sur-Marne | 727.71 mi (1,171.13 km) |
| Peso da Regua to Orsay | 711.87 mi (1,145.65 km) |
