| Grande-Synthe to Olivenza | 966.55 mi (1,555.52 km) |
| Grande-Synthe to Olot | 610.27 mi (982.14 km) |
| Grande-Synthe to Onate | 594.21 mi (956.30 km) |
| Grande-Synthe to Onda | 773.50 mi (1,244.84 km) |
| Grande-Synthe to Onteniente | 854.13 mi (1,374.59 km) |
| Grande-Synthe to Orihuela | 907.24 mi (1,460.06 km) |
| Grande-Synthe to Osuna | 1,019.22 mi (1,640.28 km) |
| Grande-Synthe to Ourense | 767.77 mi (1,235.61 km) |
| Grande-Synthe to Oviedo | 651.87 mi (1,049.08 km) |
| Grande-Synthe to Paiporta | 811.25 mi (1,305.58 km) |
| Grande-Synthe to Pajara | 1,783.26 mi (2,869.89 km) |
| Grande-Synthe to Palafolls | 646.01 mi (1,039.65 km) |
| Grande-Synthe to Palafrugell | 629.83 mi (1,013.61 km) |
| Grande-Synthe to Palamos | 634.66 mi (1,021.39 km) |
| Grande-Synthe to Palencia | 700.77 mi (1,127.79 km) |
