| Hillegom to Olivenza | 1,093.73 mi (1,760.19 km) |
| Hillegom to Olot | 704.72 mi (1,134.14 km) |
| Hillegom to Onate | 716.56 mi (1,153.18 km) |
| Hillegom to Onda | 881.86 mi (1,419.21 km) |
| Hillegom to Onteniente | 962.75 mi (1,549.39 km) |
| Hillegom to Orihuela | 1,016.51 mi (1,635.91 km) |
| Hillegom to Osuna | 1,140.87 mi (1,836.05 km) |
| Hillegom to Ourense | 898.74 mi (1,446.38 km) |
| Hillegom to Oviedo | 782.06 mi (1,258.60 km) |
| Hillegom to Paiporta | 919.70 mi (1,480.11 km) |
| Hillegom to Pajara | 1,911.72 mi (3,076.62 km) |
| Hillegom to Palafolls | 738.37 mi (1,188.29 km) |
| Hillegom to Palafrugell | 719.28 mi (1,157.58 km) |
| Hillegom to Palamos | 724.36 mi (1,165.75 km) |
| Hillegom to Palencia | 827.21 mi (1,331.27 km) |
