| North Adams to Montalegre | 3,253.99 mi (5,236.79 km) |
| North Adams to Montemor-o-Novo | 3,328.03 mi (5,355.95 km) |
| North Adams to Montemor-o-Velho | 3,259.70 mi (5,245.99 km) |
| North Adams to Montijo | 3,294.04 mi (5,301.24 km) |
| North Adams to Mortagua | 3,273.29 mi (5,267.85 km) |
| North Adams to Moura | 3,381.24 mi (5,441.58 km) |
| North Adams to Murtosa | 3,245.50 mi (5,223.12 km) |
| North Adams to Nazare | 3,258.19 mi (5,243.55 km) |
| North Adams to Nelas | 3,289.05 mi (5,293.21 km) |
| North Adams to Obidos | 3,261.07 mi (5,248.19 km) |
| North Adams to Odemira | 3,341.39 mi (5,377.44 km) |
| North Adams to Odivelas | 3,277.25 mi (5,274.22 km) |
| North Adams to Oeiras | 3,273.90 mi (5,268.84 km) |
| North Adams to Olhao | 3,397.85 mi (5,468.31 km) |
| North Adams to Oliveira de Azemeis | 3,249.92 mi (5,230.24 km) |
