| Mattoon to Montalegre | 4,061.92 mi (6,537.03 km) |
| Mattoon to Montemor-o-Novo | 4,144.46 mi (6,669.87 km) |
| Mattoon to Montemor-o-Velho | 4,073.16 mi (6,555.13 km) |
| Mattoon to Montijo | 4,110.95 mi (6,615.93 km) |
| Mattoon to Mortagua | 4,085.64 mi (6,575.21 km) |
| Mattoon to Moura | 4,198.05 mi (6,756.11 km) |
| Mattoon to Murtosa | 4,057.46 mi (6,529.85 km) |
| Mattoon to Nazare | 4,073.33 mi (6,555.39 km) |
| Mattoon to Nelas | 4,100.80 mi (6,599.60 km) |
| Mattoon to Obidos | 4,076.81 mi (6,561.00 km) |
| Mattoon to Odemira | 4,160.06 mi (6,694.96 km) |
| Mattoon to Odivelas | 4,094.17 mi (6,588.92 km) |
| Mattoon to Oeiras | 4,091.14 mi (6,584.05 km) |
| Mattoon to Olhao | 4,216.86 mi (6,786.38 km) |
| Mattoon to Oliveira de Azemeis | 4,061.44 mi (6,536.25 km) |
