| Koekelberg to Olivenza | 1,008.77 mi (1,623.45 km) |
| Koekelberg to Olot | 606.36 mi (975.84 km) |
| Koekelberg to Onate | 627.32 mi (1,009.57 km) |
| Koekelberg to Onda | 785.31 mi (1,263.83 km) |
| Koekelberg to Onteniente | 866.17 mi (1,393.96 km) |
| Koekelberg to Orihuela | 920.05 mi (1,480.68 km) |
| Koekelberg to Osuna | 1,050.03 mi (1,689.87 km) |
| Koekelberg to Ourense | 824.16 mi (1,326.36 km) |
| Koekelberg to Oviedo | 704.47 mi (1,133.73 km) |
| Koekelberg to Paiporta | 823.13 mi (1,324.69 km) |
| Koekelberg to Pajara | 1,827.99 mi (2,941.87 km) |
| Koekelberg to Palafolls | 639.92 mi (1,029.86 km) |
| Koekelberg to Palafrugell | 620.82 mi (999.12 km) |
| Koekelberg to Palamos | 625.90 mi (1,007.29 km) |
| Koekelberg to Palencia | 741.89 mi (1,193.95 km) |
