| Towcester to Montalegre | 780.16 mi (1,255.55 km) |
| Towcester to Montemor-o-Novo | 993.99 mi (1,599.67 km) |
| Towcester to Montemor-o-Velho | 903.69 mi (1,454.34 km) |
| Towcester to Montijo | 1,003.75 mi (1,615.38 km) |
| Towcester to Mortagua | 878.01 mi (1,413.01 km) |
| Towcester to Moura | 1,016.04 mi (1,635.17 km) |
| Towcester to Murtosa | 866.34 mi (1,394.24 km) |
| Towcester to Nazare | 947.55 mi (1,524.94 km) |
| Towcester to Nelas | 865.65 mi (1,393.12 km) |
| Towcester to Obidos | 964.89 mi (1,552.84 km) |
| Towcester to Odemira | 1,071.09 mi (1,723.74 km) |
| Towcester to Odivelas | 1,001.98 mi (1,612.53 km) |
| Towcester to Oeiras | 1,011.49 mi (1,627.84 km) |
| Towcester to Olhao | 1,095.49 mi (1,763.02 km) |
| Towcester to Oliveira de Azemeis | 856.40 mi (1,378.25 km) |
