| Leek to Olivares | 1,102.11 mi (1,773.68 km) |
| Leek to Olivenza | 1,025.30 mi (1,650.05 km) |
| Leek to Olot | 783.18 mi (1,260.40 km) |
| Leek to Onate | 696.33 mi (1,120.63 km) |
| Leek to Onda | 912.03 mi (1,467.78 km) |
| Leek to Onteniente | 989.34 mi (1,592.19 km) |
| Leek to Orihuela | 1,039.22 mi (1,672.46 km) |
| Leek to Osuna | 1,106.76 mi (1,781.16 km) |
| Leek to Ourense | 791.54 mi (1,273.87 km) |
| Leek to Oviedo | 695.85 mi (1,119.86 km) |
| Leek to Paiporta | 948.25 mi (1,526.06 km) |
| Leek to Pajara | 1,817.99 mi (2,925.78 km) |
| Leek to Palafolls | 820.82 mi (1,320.98 km) |
| Leek to Palafrugell | 809.65 mi (1,303.01 km) |
| Leek to Palamos | 813.96 mi (1,309.94 km) |
