| Senec to Olivenza | 1,385.71 mi (2,230.09 km) |
| Senec to Olot | 835.15 mi (1,344.04 km) |
| Senec to Onate | 1,018.79 mi (1,639.59 km) |
| Senec to Onda | 1,042.00 mi (1,676.93 km) |
| Senec to Onteniente | 1,107.01 mi (1,781.57 km) |
| Senec to Orihuela | 1,154.93 mi (1,858.69 km) |
| Senec to Osuna | 1,363.19 mi (2,193.84 km) |
| Senec to Ourense | 1,286.87 mi (2,071.02 km) |
| Senec to Oviedo | 1,163.98 mi (1,873.25 km) |
| Senec to Paiporta | 1,071.90 mi (1,725.06 km) |
| Senec to Pajara | 2,165.61 mi (3,485.21 km) |
| Senec to Palafolls | 845.22 mi (1,360.25 km) |
| Senec to Palafrugell | 817.93 mi (1,316.32 km) |
| Senec to Palamos | 822.31 mi (1,323.38 km) |
| Senec to Palencia | 1,147.01 mi (1,845.94 km) |
