| Diekirch to Olivenza | 1,010.37 mi (1,626.04 km) |
| Diekirch to Olot | 559.26 mi (900.03 km) |
| Diekirch to Onate | 623.35 mi (1,003.18 km) |
| Diekirch to Onda | 752.38 mi (1,210.84 km) |
| Diekirch to Onteniente | 832.33 mi (1,339.50 km) |
| Diekirch to Orihuela | 886.42 mi (1,426.56 km) |
| Diekirch to Osuna | 1,036.61 mi (1,668.27 km) |
| Diekirch to Ourense | 847.35 mi (1,363.69 km) |
| Diekirch to Oviedo | 724.23 mi (1,165.53 km) |
| Diekirch to Paiporta | 789.69 mi (1,270.89 km) |
| Diekirch to Pajara | 1,828.45 mi (2,942.61 km) |
| Diekirch to Palafolls | 589.63 mi (948.92 km) |
| Diekirch to Palafrugell | 567.76 mi (913.73 km) |
| Diekirch to Palamos | 572.99 mi (922.13 km) |
| Diekirch to Palencia | 745.62 mi (1,199.96 km) |
