| Bad Nenndorf to Olivenza | 1,229.48 mi (1,978.66 km) |
| Bad Nenndorf to Olot | 771.58 mi (1,241.75 km) |
| Bad Nenndorf to Onate | 842.96 mi (1,356.62 km) |
| Bad Nenndorf to Onda | 969.66 mi (1,560.52 km) |
| Bad Nenndorf to Onteniente | 1,048.98 mi (1,688.17 km) |
| Bad Nenndorf to Orihuela | 1,102.97 mi (1,775.06 km) |
| Bad Nenndorf to Osuna | 1,257.06 mi (2,023.05 km) |
| Bad Nenndorf to Ourense | 1,057.85 mi (1,702.45 km) |
| Bad Nenndorf to Oviedo | 936.28 mi (1,506.79 km) |
| Bad Nenndorf to Paiporta | 1,006.66 mi (1,620.06 km) |
| Bad Nenndorf to Pajara | 2,048.17 mi (3,296.22 km) |
| Bad Nenndorf to Palafolls | 799.68 mi (1,286.96 km) |
| Bad Nenndorf to Palafrugell | 776.24 mi (1,249.24 km) |
| Bad Nenndorf to Palamos | 781.49 mi (1,257.69 km) |
| Bad Nenndorf to Palencia | 963.86 mi (1,551.19 km) |
