| Northampton to Montalegre | 788.19 mi (1,268.48 km) |
| Northampton to Montemor-o-Novo | 1,001.98 mi (1,612.52 km) |
| Northampton to Montemor-o-Velho | 911.72 mi (1,467.27 km) |
| Northampton to Montijo | 1,011.77 mi (1,628.28 km) |
| Northampton to Mortagua | 886.03 mi (1,425.92 km) |
| Northampton to Moura | 1,023.97 mi (1,647.92 km) |
| Northampton to Murtosa | 874.37 mi (1,407.17 km) |
| Northampton to Nazare | 955.58 mi (1,537.87 km) |
| Northampton to Nelas | 873.65 mi (1,406.01 km) |
| Northampton to Obidos | 972.92 mi (1,565.77 km) |
| Northampton to Odemira | 1,079.07 mi (1,736.59 km) |
| Northampton to Odivelas | 1,010.00 mi (1,625.45 km) |
| Northampton to Oeiras | 1,019.52 mi (1,640.76 km) |
| Northampton to Olhao | 1,103.42 mi (1,775.78 km) |
| Northampton to Oliveira de Azemeis | 864.44 mi (1,391.18 km) |
