| Griffin to Montalegre | 4,094.13 mi (6,588.86 km) |
| Griffin to Montemor-o-Novo | 4,146.77 mi (6,673.58 km) |
| Griffin to Montemor-o-Velho | 4,087.68 mi (6,578.49 km) |
| Griffin to Montijo | 4,111.39 mi (6,616.64 km) |
| Griffin to Mortagua | 4,103.93 mi (6,604.64 km) |
| Griffin to Moura | 4,198.24 mi (6,756.41 km) |
| Griffin to Murtosa | 4,077.28 mi (6,561.75 km) |
| Griffin to Nazare | 4,081.54 mi (6,568.60 km) |
| Griffin to Nelas | 4,121.00 mi (6,632.11 km) |
| Griffin to Obidos | 4,082.55 mi (6,570.23 km) |
| Griffin to Odemira | 4,151.52 mi (6,681.23 km) |
| Griffin to Odivelas | 4,094.70 mi (6,589.78 km) |
| Griffin to Oeiras | 4,090.27 mi (6,582.65 km) |
| Griffin to Olhao | 4,206.02 mi (6,768.93 km) |
| Griffin to Oliveira de Azemeis | 4,082.70 mi (6,570.47 km) |
