| Sredets to Olivenza | 1,806.91 mi (2,907.94 km) |
| Sredets to Olot | 1,259.08 mi (2,026.30 km) |
| Sredets to Onate | 1,496.98 mi (2,409.16 km) |
| Sredets to Onda | 1,431.91 mi (2,304.44 km) |
| Sredets to Onteniente | 1,472.52 mi (2,369.79 km) |
| Sredets to Orihuela | 1,506.71 mi (2,424.82 km) |
| Sredets to Osuna | 1,739.86 mi (2,800.04 km) |
| Sredets to Ourense | 1,777.72 mi (2,860.96 km) |
| Sredets to Oviedo | 1,664.24 mi (2,678.33 km) |
| Sredets to Paiporta | 1,450.15 mi (2,333.79 km) |
| Sredets to Pajara | 2,490.73 mi (4,008.44 km) |
| Sredets to Palafolls | 1,251.75 mi (2,014.50 km) |
| Sredets to Palafrugell | 1,227.86 mi (1,976.06 km) |
| Sredets to Palamos | 1,230.42 mi (1,980.18 km) |
| Sredets to Palencia | 1,615.34 mi (2,599.63 km) |
