| Fort Collins to Montalegre | 4,752.87 mi (7,649.01 km) |
| Fort Collins to Montemor-o-Novo | 4,865.03 mi (7,829.50 km) |
| Fort Collins to Montemor-o-Velho | 4,782.71 mi (7,697.03 km) |
| Fort Collins to Montijo | 4,834.07 mi (7,779.69 km) |
| Fort Collins to Mortagua | 4,790.97 mi (7,710.32 km) |
| Fort Collins to Moura | 4,919.67 mi (7,917.45 km) |
| Fort Collins to Murtosa | 4,761.80 mi (7,663.37 km) |
| Fort Collins to Nazare | 4,789.38 mi (7,707.76 km) |
| Fort Collins to Nelas | 4,803.78 mi (7,730.94 km) |
| Fort Collins to Obidos | 4,795.31 mi (7,717.31 km) |
| Fort Collins to Odemira | 4,891.11 mi (7,871.48 km) |
| Fort Collins to Odivelas | 4,817.55 mi (7,753.10 km) |
| Fort Collins to Oeiras | 4,815.98 mi (7,750.57 km) |
| Fort Collins to Olhao | 4,949.07 mi (7,964.76 km) |
| Fort Collins to Oliveira de Azemeis | 4,764.16 mi (7,667.18 km) |
