| Sondershausen to Olivenza | 1,233.59 mi (1,985.28 km) |
| Sondershausen to Olot | 747.15 mi (1,202.42 km) |
| Sondershausen to Onate | 846.38 mi (1,362.12 km) |
| Sondershausen to Onda | 951.48 mi (1,531.25 km) |
| Sondershausen to Onteniente | 1,029.02 mi (1,656.04 km) |
| Sondershausen to Orihuela | 1,082.50 mi (1,742.12 km) |
| Sondershausen to Osuna | 1,250.11 mi (2,011.86 km) |
| Sondershausen to Ourense | 1,077.82 mi (1,734.58 km) |
| Sondershausen to Oviedo | 954.39 mi (1,535.95 km) |
| Sondershausen to Paiporta | 987.57 mi (1,589.34 km) |
| Sondershausen to Pajara | 2,048.75 mi (3,297.15 km) |
| Sondershausen to Palafolls | 772.12 mi (1,242.61 km) |
| Sondershausen to Palafrugell | 747.24 mi (1,202.57 km) |
| Sondershausen to Palamos | 752.45 mi (1,210.95 km) |
| Sondershausen to Palencia | 971.16 mi (1,562.92 km) |
