| Desborough to Olivares | 1,069.53 mi (1,721.25 km) |
| Desborough to Olivenza | 996.79 mi (1,604.19 km) |
| Desborough to Olot | 725.26 mi (1,167.19 km) |
| Desborough to Onate | 654.12 mi (1,052.70 km) |
| Desborough to Onda | 862.50 mi (1,388.05 km) |
| Desborough to Onteniente | 940.94 mi (1,514.29 km) |
| Desborough to Orihuela | 991.80 mi (1,596.15 km) |
| Desborough to Osuna | 1,070.93 mi (1,723.50 km) |
| Desborough to Ourense | 771.10 mi (1,240.96 km) |
| Desborough to Oviedo | 668.78 mi (1,076.29 km) |
| Desborough to Paiporta | 899.24 mi (1,447.19 km) |
| Desborough to Pajara | 1,798.58 mi (2,894.54 km) |
| Desborough to Palafolls | 762.65 mi (1,227.36 km) |
| Desborough to Palafrugell | 750.37 mi (1,207.61 km) |
| Desborough to Palamos | 754.80 mi (1,214.74 km) |
