| Slupca to Olivenza | 1,518.90 mi (2,444.43 km) |
| Slupca to Olot | 1,000.62 mi (1,610.35 km) |
| Slupca to Onate | 1,134.30 mi (1,825.47 km) |
| Slupca to Onda | 1,210.22 mi (1,947.67 km) |
| Slupca to Onteniente | 1,283.39 mi (2,065.42 km) |
| Slupca to Orihuela | 1,335.10 mi (2,148.63 km) |
| Slupca to Osuna | 1,521.68 mi (2,448.91 km) |
| Slupca to Ourense | 1,377.17 mi (2,216.34 km) |
| Slupca to Oviedo | 1,253.11 mi (2,016.69 km) |
| Slupca to Paiporta | 1,244.16 mi (2,002.28 km) |
| Slupca to Pajara | 2,326.06 mi (3,743.43 km) |
| Slupca to Palafolls | 1,019.37 mi (1,640.51 km) |
| Slupca to Palafrugell | 992.69 mi (1,597.58 km) |
| Slupca to Palamos | 997.65 mi (1,605.57 km) |
| Slupca to Palencia | 1,261.50 mi (2,030.19 km) |
