| American Canyon to Montalegre | 5,543.83 mi (8,921.93 km) |
| American Canyon to Montemor-o-Novo | 5,678.52 mi (9,138.69 km) |
| American Canyon to Montemor-o-Velho | 5,588.47 mi (8,993.77 km) |
| American Canyon to Montijo | 5,650.14 mi (9,093.03 km) |
| American Canyon to Mortagua | 5,593.12 mi (9,001.25 km) |
| American Canyon to Moura | 5,733.20 mi (9,226.69 km) |
| American Canyon to Murtosa | 5,563.63 mi (8,953.79 km) |
| American Canyon to Nazare | 5,600.35 mi (9,012.90 km) |
| American Canyon to Nelas | 5,603.77 mi (9,018.40 km) |
| American Canyon to Obidos | 5,608.19 mi (9,025.51 km) |
| American Canyon to Odemira | 5,712.83 mi (9,193.91 km) |
| American Canyon to Odivelas | 5,634.09 mi (9,067.18 km) |
| American Canyon to Oeiras | 5,633.73 mi (9,066.61 km) |
| American Canyon to Olhao | 5,770.91 mi (9,287.38 km) |
| American Canyon to Oliveira de Azemeis | 5,564.63 mi (8,955.40 km) |
