| Willich to Olivenza | 1,091.83 mi (1,757.13 km) |
| Willich to Olot | 655.98 mi (1,055.69 km) |
| Willich to Onate | 706.59 mi (1,137.15 km) |
| Willich to Onda | 846.49 mi (1,362.30 km) |
| Willich to Onteniente | 926.79 mi (1,491.52 km) |
| Willich to Orihuela | 980.90 mi (1,578.61 km) |
| Willich to Osuna | 1,124.77 mi (1,810.15 km) |
| Willich to Ourense | 916.33 mi (1,474.68 km) |
| Willich to Oviedo | 795.08 mi (1,279.56 km) |
| Willich to Paiporta | 883.99 mi (1,422.65 km) |
| Willich to Pajara | 1,911.12 mi (3,075.65 km) |
| Willich to Palafolls | 686.84 mi (1,105.36 km) |
| Willich to Palafrugell | 665.25 mi (1,070.62 km) |
| Willich to Palamos | 670.46 mi (1,079.01 km) |
| Willich to Palencia | 825.51 mi (1,328.53 km) |
