| Altoona to Montalegre | 3,564.64 mi (5,736.73 km) |
| Altoona to Montemor-o-Novo | 3,636.27 mi (5,852.01 km) |
| Altoona to Montemor-o-Velho | 3,569.09 mi (5,743.89 km) |
| Altoona to Montijo | 3,602.06 mi (5,796.95 km) |
| Altoona to Mortagua | 3,582.99 mi (5,766.26 km) |
| Altoona to Moura | 3,689.27 mi (5,937.31 km) |
| Altoona to Murtosa | 3,555.31 mi (5,721.72 km) |
| Altoona to Nazare | 3,567.00 mi (5,740.53 km) |
| Altoona to Nelas | 3,598.90 mi (5,791.87 km) |
| Altoona to Obidos | 3,569.63 mi (5,744.77 km) |
| Altoona to Odemira | 3,648.39 mi (5,871.52 km) |
| Altoona to Odivelas | 3,585.27 mi (5,769.93 km) |
| Altoona to Oeiras | 3,581.77 mi (5,764.30 km) |
| Altoona to Olhao | 3,704.60 mi (5,961.98 km) |
| Altoona to Oliveira de Azemeis | 3,559.85 mi (5,729.02 km) |
