| Desborough to Montalegre | 802.57 mi (1,291.60 km) |
| Desborough to Montemor-o-Novo | 1,016.54 mi (1,635.96 km) |
| Desborough to Montemor-o-Velho | 926.08 mi (1,490.39 km) |
| Desborough to Montijo | 1,026.22 mi (1,651.55 km) |
| Desborough to Mortagua | 900.45 mi (1,449.14 km) |
| Desborough to Moura | 1,038.65 mi (1,671.55 km) |
| Desborough to Murtosa | 888.69 mi (1,430.21 km) |
| Desborough to Nazare | 969.93 mi (1,560.95 km) |
| Desborough to Nelas | 888.14 mi (1,429.33 km) |
| Desborough to Obidos | 987.27 mi (1,588.87 km) |
| Desborough to Odemira | 1,093.64 mi (1,760.04 km) |
| Desborough to Odivelas | 1,024.40 mi (1,648.62 km) |
| Desborough to Oeiras | 1,033.90 mi (1,663.91 km) |
| Desborough to Olhao | 1,118.10 mi (1,799.41 km) |
| Desborough to Oliveira de Azemeis | 878.77 mi (1,414.25 km) |
