| Dunkirk to Olivares | 3,769.91 mi (6,067.08 km) |
| Dunkirk to Olivenza | 3,681.81 mi (5,925.29 km) |
| Dunkirk to Olot | 4,001.31 mi (6,439.48 km) |
| Dunkirk to Onate | 3,754.87 mi (6,042.87 km) |
| Dunkirk to Onda | 3,955.69 mi (6,366.06 km) |
| Dunkirk to Onteniente | 3,980.31 mi (6,405.69 km) |
| Dunkirk to Orihuela | 3,990.96 mi (6,422.83 km) |
| Dunkirk to Osuna | 3,826.15 mi (6,157.60 km) |
| Dunkirk to Ourense | 3,530.02 mi (5,681.02 km) |
| Dunkirk to Oviedo | 3,590.77 mi (5,778.78 km) |
| Dunkirk to Paiporta | 3,967.48 mi (6,385.05 km) |
| Dunkirk to Pajara | 3,707.42 mi (5,966.51 km) |
| Dunkirk to Palafolls | 4,030.97 mi (6,487.21 km) |
| Dunkirk to Palafrugell | 4,040.39 mi (6,502.38 km) |
| Dunkirk to Palamos | 4,041.42 mi (6,504.04 km) |
