| Cloppenburg to Olivenza | 1,215.75 mi (1,956.56 km) |
| Cloppenburg to Olot | 780.83 mi (1,256.63 km) |
| Cloppenburg to Onate | 831.68 mi (1,338.45 km) |
| Cloppenburg to Onda | 973.02 mi (1,565.93 km) |
| Cloppenburg to Onteniente | 1,053.22 mi (1,694.99 km) |
| Cloppenburg to Orihuela | 1,107.33 mi (1,782.07 km) |
| Cloppenburg to Osuna | 1,251.09 mi (2,013.44 km) |
| Cloppenburg to Ourense | 1,033.67 mi (1,663.53 km) |
| Cloppenburg to Oviedo | 913.99 mi (1,470.92 km) |
| Cloppenburg to Paiporta | 1,010.47 mi (1,626.20 km) |
| Cloppenburg to Pajara | 2,035.17 mi (3,275.29 km) |
| Cloppenburg to Palafolls | 810.94 mi (1,305.08 km) |
| Cloppenburg to Palafrugell | 788.74 mi (1,269.35 km) |
| Cloppenburg to Palamos | 793.97 mi (1,277.78 km) |
| Cloppenburg to Palencia | 949.05 mi (1,527.34 km) |
