| Leighton Buzzard to Olivares | 1,036.75 mi (1,668.49 km) |
| Leighton Buzzard to Olivenza | 965.29 mi (1,553.48 km) |
| Leighton Buzzard to Olot | 688.56 mi (1,108.13 km) |
| Leighton Buzzard to Onate | 619.17 mi (996.45 km) |
| Leighton Buzzard to Onda | 826.16 mi (1,329.57 km) |
| Leighton Buzzard to Onteniente | 904.73 mi (1,456.03 km) |
| Leighton Buzzard to Orihuela | 955.72 mi (1,538.09 km) |
| Leighton Buzzard to Osuna | 1,037.26 mi (1,669.31 km) |
| Leighton Buzzard to Ourense | 742.61 mi (1,195.12 km) |
| Leighton Buzzard to Oviedo | 638.14 mi (1,026.99 km) |
| Leighton Buzzard to Paiporta | 862.96 mi (1,388.81 km) |
| Leighton Buzzard to Pajara | 1,769.69 mi (2,848.04 km) |
| Leighton Buzzard to Palafolls | 725.97 mi (1,168.34 km) |
| Leighton Buzzard to Palafrugell | 713.80 mi (1,148.75 km) |
| Leighton Buzzard to Palamos | 718.22 mi (1,155.86 km) |
