| Heerlerbaan to Olivenza | 1,055.96 mi (1,699.40 km) |
| Heerlerbaan to Olot | 622.93 mi (1,002.51 km) |
| Heerlerbaan to Onate | 670.71 mi (1,079.40 km) |
| Heerlerbaan to Onda | 811.97 mi (1,306.73 km) |
| Heerlerbaan to Onteniente | 892.37 mi (1,436.13 km) |
| Heerlerbaan to Orihuela | 946.48 mi (1,523.20 km) |
| Heerlerbaan to Osuna | 1,089.08 mi (1,752.70 km) |
| Heerlerbaan to Ourense | 881.31 mi (1,418.33 km) |
| Heerlerbaan to Oviedo | 759.83 mi (1,222.83 km) |
| Heerlerbaan to Paiporta | 849.52 mi (1,367.18 km) |
| Heerlerbaan to Pajara | 1,875.23 mi (3,017.90 km) |
| Heerlerbaan to Palafolls | 654.27 mi (1,052.95 km) |
| Heerlerbaan to Palafrugell | 633.09 mi (1,018.86 km) |
| Heerlerbaan to Palamos | 638.28 mi (1,027.22 km) |
| Heerlerbaan to Palencia | 789.66 mi (1,270.84 km) |
