| Opwijk to Olivenza | 1,010.26 mi (1,625.86 km) |
| Opwijk to Olot | 612.22 mi (985.27 km) |
| Opwijk to Onate | 629.63 mi (1,013.30 km) |
| Opwijk to Onda | 789.89 mi (1,271.20 km) |
| Opwijk to Onteniente | 870.77 mi (1,401.37 km) |
| Opwijk to Orihuela | 924.60 mi (1,488.00 km) |
| Opwijk to Osuna | 1,052.82 mi (1,694.35 km) |
| Opwijk to Ourense | 823.81 mi (1,325.80 km) |
| Opwijk to Oviedo | 704.55 mi (1,133.87 km) |
| Opwijk to Paiporta | 827.72 mi (1,332.08 km) |
| Opwijk to Pajara | 1,829.34 mi (2,944.04 km) |
| Opwijk to Palafolls | 645.99 mi (1,039.62 km) |
| Opwijk to Palafrugell | 627.11 mi (1,009.24 km) |
| Opwijk to Palamos | 632.17 mi (1,017.39 km) |
| Opwijk to Palencia | 743.39 mi (1,196.37 km) |
