| Iserlohn to Olivenza | 1,131.19 mi (1,820.48 km) |
| Iserlohn to Olot | 680.87 mi (1,095.75 km) |
| Iserlohn to Onate | 744.82 mi (1,198.67 km) |
| Iserlohn to Onda | 875.87 mi (1,409.57 km) |
| Iserlohn to Onteniente | 955.65 mi (1,537.98 km) |
| Iserlohn to Orihuela | 1,009.73 mi (1,625.00 km) |
| Iserlohn to Osuna | 1,160.01 mi (1,866.86 km) |
| Iserlohn to Ourense | 960.40 mi (1,545.61 km) |
| Iserlohn to Oviedo | 838.50 mi (1,349.43 km) |
| Iserlohn to Paiporta | 913.10 mi (1,469.49 km) |
| Iserlohn to Pajara | 1,950.00 mi (3,138.21 km) |
| Iserlohn to Palafolls | 710.29 mi (1,143.10 km) |
| Iserlohn to Palafrugell | 687.69 mi (1,106.73 km) |
| Iserlohn to Palamos | 692.93 mi (1,115.16 km) |
| Iserlohn to Palencia | 865.50 mi (1,392.90 km) |
