| Bad Salzdetfurth to Olivenza | 1,236.44 mi (1,989.85 km) |
| Bad Salzdetfurth to Olot | 767.98 mi (1,235.95 km) |
| Bad Salzdetfurth to Onate | 849.31 mi (1,366.83 km) |
| Bad Salzdetfurth to Onda | 968.56 mi (1,558.74 km) |
| Bad Salzdetfurth to Onteniente | 1,047.32 mi (1,685.49 km) |
| Bad Salzdetfurth to Orihuela | 1,101.17 mi (1,772.17 km) |
| Bad Salzdetfurth to Osuna | 1,260.18 mi (2,028.06 km) |
| Bad Salzdetfurth to Ourense | 1,070.09 mi (1,722.15 km) |
| Bad Salzdetfurth to Oviedo | 947.78 mi (1,525.30 km) |
| Bad Salzdetfurth to Paiporta | 1,005.27 mi (1,617.82 km) |
| Bad Salzdetfurth to Pajara | 2,054.24 mi (3,305.97 km) |
| Bad Salzdetfurth to Palafolls | 794.99 mi (1,279.42 km) |
| Bad Salzdetfurth to Palafrugell | 771.00 mi (1,240.80 km) |
| Bad Salzdetfurth to Palamos | 776.24 mi (1,249.24 km) |
| Bad Salzdetfurth to Palencia | 971.69 mi (1,563.79 km) |
