| Ahlen to Olivenza | 1,156.63 mi (1,861.42 km) |
| Ahlen to Olot | 708.80 mi (1,140.70 km) |
| Ahlen to Onate | 770.62 mi (1,240.19 km) |
| Ahlen to Onda | 903.52 mi (1,454.07 km) |
| Ahlen to Onteniente | 983.36 mi (1,582.57 km) |
| Ahlen to Orihuela | 1,037.45 mi (1,669.61 km) |
| Ahlen to Osuna | 1,186.72 mi (1,909.84 km) |
| Ahlen to Ourense | 983.32 mi (1,582.50 km) |
| Ahlen to Oviedo | 861.87 mi (1,387.04 km) |
| Ahlen to Paiporta | 940.78 mi (1,514.05 km) |
| Ahlen to Pajara | 1,975.66 mi (3,179.52 km) |
| Ahlen to Palafolls | 738.25 mi (1,188.10 km) |
| Ahlen to Palafrugell | 715.66 mi (1,151.74 km) |
| Ahlen to Palamos | 720.90 mi (1,160.17 km) |
| Ahlen to Palencia | 890.66 mi (1,433.38 km) |
