| Seraing to Olivenza | 1,026.35 mi (1,651.75 km) |
| Seraing to Olot | 597.80 mi (962.07 km) |
| Seraing to Onate | 641.31 mi (1,032.08 km) |
| Seraing to Onda | 784.92 mi (1,263.20 km) |
| Seraing to Onteniente | 865.45 mi (1,392.81 km) |
| Seraing to Orihuela | 919.54 mi (1,479.85 km) |
| Seraing to Osuna | 1,060.22 mi (1,706.26 km) |
| Seraing to Ourense | 851.61 mi (1,370.53 km) |
| Seraing to Oviedo | 730.06 mi (1,174.92 km) |
| Seraing to Paiporta | 822.54 mi (1,323.76 km) |
| Seraing to Pajara | 1,845.66 mi (2,970.31 km) |
| Seraing to Palafolls | 629.70 mi (1,013.40 km) |
| Seraing to Palafrugell | 608.99 mi (980.08 km) |
| Seraing to Palamos | 614.17 mi (988.41 km) |
| Seraing to Palencia | 759.99 mi (1,223.09 km) |
