| Herk-de-Stad to Olivenza | 1,035.55 mi (1,666.56 km) |
| Herk-de-Stad to Olot | 618.27 mi (995.00 km) |
| Herk-de-Stad to Onate | 652.12 mi (1,049.48 km) |
| Herk-de-Stad to Onda | 802.34 mi (1,291.23 km) |
| Herk-de-Stad to Onteniente | 883.05 mi (1,421.12 km) |
| Herk-de-Stad to Orihuela | 937.07 mi (1,508.07 km) |
| Herk-de-Stad to Osuna | 1,073.09 mi (1,726.97 km) |
| Herk-de-Stad to Ourense | 855.30 mi (1,376.47 km) |
| Herk-de-Stad to Oviedo | 734.77 mi (1,182.50 km) |
| Herk-de-Stad to Paiporta | 840.06 mi (1,351.95 km) |
| Herk-de-Stad to Pajara | 1,854.97 mi (2,985.29 km) |
| Herk-de-Stad to Palafolls | 650.80 mi (1,047.36 km) |
| Herk-de-Stad to Palafrugell | 630.64 mi (1,014.92 km) |
| Herk-de-Stad to Palamos | 635.79 mi (1,023.20 km) |
| Herk-de-Stad to Palencia | 768.81 mi (1,237.27 km) |
