| Northampton to Olivares | 1,054.73 mi (1,697.43 km) |
| Northampton to Olivenza | 982.10 mi (1,580.53 km) |
| Northampton to Olot | 711.98 mi (1,145.83 km) |
| Northampton to Onate | 639.36 mi (1,028.96 km) |
| Northampton to Onda | 848.16 mi (1,364.98 km) |
| Northampton to Onteniente | 926.52 mi (1,491.09 km) |
| Northampton to Orihuela | 977.31 mi (1,572.84 km) |
| Northampton to Osuna | 1,056.11 mi (1,699.64 km) |
| Northampton to Ourense | 756.81 mi (1,217.97 km) |
| Northampton to Oviedo | 654.17 mi (1,052.78 km) |
| Northampton to Paiporta | 884.86 mi (1,424.05 km) |
| Northampton to Pajara | 1,784.26 mi (2,871.48 km) |
| Northampton to Palafolls | 749.43 mi (1,206.09 km) |
| Northampton to Palafrugell | 737.38 mi (1,186.71 km) |
| Northampton to Palamos | 741.79 mi (1,193.79 km) |
