| Sermoneta to Olivenza | 1,076.91 mi (1,733.11 km) |
| Sermoneta to Olot | 541.40 mi (871.29 km) |
| Sermoneta to Onate | 792.60 mi (1,275.57 km) |
| Sermoneta to Onda | 701.23 mi (1,128.52 km) |
| Sermoneta to Onteniente | 740.82 mi (1,192.24 km) |
| Sermoneta to Orihuela | 776.01 mi (1,248.87 km) |
| Sermoneta to Osuna | 1,008.40 mi (1,622.86 km) |
| Sermoneta to Ourense | 1,070.05 mi (1,722.07 km) |
| Sermoneta to Oviedo | 965.83 mi (1,554.36 km) |
| Sermoneta to Paiporta | 718.54 mi (1,156.37 km) |
| Sermoneta to Pajara | 1,773.13 mi (2,853.57 km) |
| Sermoneta to Palafolls | 528.38 mi (850.34 km) |
| Sermoneta to Palafrugell | 506.69 mi (815.45 km) |
| Sermoneta to Palamos | 508.51 mi (818.37 km) |
| Sermoneta to Palencia | 901.47 mi (1,450.78 km) |
