| Neckargemund to Olivenza | 1,077.99 mi (1,734.86 km) |
| Neckargemund to Olot | 583.19 mi (938.55 km) |
| Neckargemund to Onate | 692.00 mi (1,113.67 km) |
| Neckargemund to Onda | 787.95 mi (1,268.08 km) |
| Neckargemund to Onteniente | 865.23 mi (1,392.46 km) |
| Neckargemund to Orihuela | 918.66 mi (1,478.44 km) |
| Neckargemund to Osuna | 1,089.14 mi (1,752.81 km) |
| Neckargemund to Ourense | 935.20 mi (1,505.06 km) |
| Neckargemund to Oviedo | 810.96 mi (1,305.11 km) |
| Neckargemund to Paiporta | 823.90 mi (1,325.93 km) |
| Neckargemund to Pajara | 1,890.10 mi (3,041.82 km) |
| Neckargemund to Palafolls | 608.23 mi (978.86 km) |
| Neckargemund to Palafrugell | 583.46 mi (938.99 km) |
| Neckargemund to Palamos | 588.68 mi (947.39 km) |
| Neckargemund to Palencia | 818.67 mi (1,317.52 km) |
