| Knokke-Heist to Olivenza | 1,008.71 mi (1,623.36 km) |
| Knokke-Heist to Olot | 633.95 mi (1,020.25 km) |
| Knokke-Heist to Onate | 632.96 mi (1,018.66 km) |
| Knokke-Heist to Onda | 804.44 mi (1,294.62 km) |
| Knokke-Heist to Onteniente | 885.28 mi (1,424.72 km) |
| Knokke-Heist to Orihuela | 938.77 mi (1,510.81 km) |
| Knokke-Heist to Osuna | 1,057.71 mi (1,702.22 km) |
| Knokke-Heist to Ourense | 813.54 mi (1,309.27 km) |
| Knokke-Heist to Oviedo | 696.63 mi (1,121.12 km) |
| Knokke-Heist to Paiporta | 842.27 mi (1,355.51 km) |
| Knokke-Heist to Pajara | 1,826.44 mi (2,939.37 km) |
| Knokke-Heist to Palafolls | 668.77 mi (1,076.27 km) |
| Knokke-Heist to Palafrugell | 651.16 mi (1,047.94 km) |
| Knokke-Heist to Palamos | 656.12 mi (1,055.93 km) |
| Knokke-Heist to Palencia | 742.34 mi (1,194.68 km) |
