| Herstal to Olivenza | 1,034.54 mi (1,664.93 km) |
| Herstal to Olot | 604.90 mi (973.49 km) |
| Herstal to Onate | 649.46 mi (1,045.20 km) |
| Herstal to Onda | 792.52 mi (1,275.43 km) |
| Herstal to Onteniente | 873.02 mi (1,404.98 km) |
| Herstal to Orihuela | 927.11 mi (1,492.03 km) |
| Herstal to Osuna | 1,068.26 mi (1,719.19 km) |
| Herstal to Ourense | 859.74 mi (1,383.61 km) |
| Herstal to Oviedo | 738.23 mi (1,188.06 km) |
| Herstal to Paiporta | 830.13 mi (1,335.96 km) |
| Herstal to Pajara | 1,853.85 mi (2,983.48 km) |
| Herstal to Palafolls | 636.65 mi (1,024.60 km) |
| Herstal to Palafrugell | 615.82 mi (991.07 km) |
| Herstal to Palamos | 621.00 mi (999.40 km) |
| Herstal to Palencia | 768.19 mi (1,236.28 km) |
