| Stratford-upon-Avon to Mangualde | 850.34 mi (1,368.49 km) |
| Stratford-upon-Avon to Marco de Canavezes | 818.90 mi (1,317.89 km) |
| Stratford-upon-Avon to Marinha Grande | 925.99 mi (1,490.24 km) |
| Stratford-upon-Avon to Massama | 996.81 mi (1,604.21 km) |
| Stratford-upon-Avon to Matosinhos | 828.83 mi (1,333.87 km) |
| Stratford-upon-Avon to Mealhada | 876.25 mi (1,410.19 km) |
| Stratford-upon-Avon to Melgaco | 760.61 mi (1,224.09 km) |
| Stratford-upon-Avon to Melres | 830.89 mi (1,337.19 km) |
| Stratford-upon-Avon to Mira | 877.98 mi (1,412.97 km) |
| Stratford-upon-Avon to Miranda do Corvo | 892.80 mi (1,436.82 km) |
| Stratford-upon-Avon to Mirandela | 783.20 mi (1,260.44 km) |
| Stratford-upon-Avon to Mogadouro | 786.42 mi (1,265.62 km) |
| Stratford-upon-Avon to Moimenta da Beira | 823.28 mi (1,324.94 km) |
| Stratford-upon-Avon to Moita | 998.82 mi (1,607.44 km) |
| Stratford-upon-Avon to Moncao | 767.46 mi (1,235.10 km) |
