| Osterwieck to Olivenza | 1,254.76 mi (2,019.34 km) |
| Osterwieck to Olot | 777.92 mi (1,251.94 km) |
| Osterwieck to Onate | 867.43 mi (1,395.99 km) |
| Osterwieck to Onda | 980.46 mi (1,577.90 km) |
| Osterwieck to Onteniente | 1,058.66 mi (1,703.75 km) |
| Osterwieck to Orihuela | 1,112.36 mi (1,790.17 km) |
| Osterwieck to Osuna | 1,275.44 mi (2,052.62 km) |
| Osterwieck to Ourense | 1,092.37 mi (1,758.00 km) |
| Osterwieck to Oviedo | 969.61 mi (1,560.43 km) |
| Osterwieck to Paiporta | 1,016.89 mi (1,636.52 km) |
| Osterwieck to Pajara | 2,071.62 mi (3,333.95 km) |
| Osterwieck to Palafolls | 803.91 mi (1,293.77 km) |
| Osterwieck to Palafrugell | 779.44 mi (1,254.39 km) |
| Osterwieck to Palamos | 784.67 mi (1,262.81 km) |
| Osterwieck to Palencia | 990.84 mi (1,594.60 km) |
