| Denver to Montalegre | 4,778.07 mi (7,689.56 km) |
| Denver to Montemor-o-Novo | 4,887.67 mi (7,865.95 km) |
| Denver to Montemor-o-Velho | 4,806.30 mi (7,734.99 km) |
| Denver to Montijo | 4,856.45 mi (7,815.70 km) |
| Denver to Mortagua | 4,814.95 mi (7,748.91 km) |
| Denver to Moura | 4,942.27 mi (7,953.81 km) |
| Denver to Murtosa | 4,785.83 mi (7,702.06 km) |
| Denver to Nazare | 4,812.38 mi (7,744.77 km) |
| Denver to Nelas | 4,827.98 mi (7,769.88 km) |
| Denver to Obidos | 4,818.09 mi (7,753.96 km) |
| Denver to Odemira | 4,912.77 mi (7,906.34 km) |
| Denver to Odivelas | 4,839.89 mi (7,789.05 km) |
| Denver to Oeiras | 4,838.17 mi (7,786.29 km) |
| Denver to Olhao | 4,970.66 mi (7,999.51 km) |
| Denver to Oliveira de Azemeis | 4,788.35 mi (7,706.10 km) |
