| Denver to Cascais | 4,833.11 mi (7,778.14 km) |
| Denver to Castelo Branco | 4,871.28 mi (7,839.57 km) |
| Denver to Castro Daire | 4,809.02 mi (7,739.38 km) |
| Denver to Celorico de Basto | 4,786.85 mi (7,703.69 km) |
| Denver to Chamusca | 4,847.74 mi (7,801.68 km) |
| Denver to Chaves | 4,794.82 mi (7,716.53 km) |
| Denver to Cinfaes | 4,792.52 mi (7,712.81 km) |
| Denver to Coimbra | 4,815.45 mi (7,749.73 km) |
| Denver to Condeixa-a-Nova | 4,816.19 mi (7,750.92 km) |
| Denver to Corroios | 4,848.21 mi (7,802.45 km) |
| Denver to Coruche | 4,861.71 mi (7,824.16 km) |
| Denver to Costa de Caparica | 4,843.29 mi (7,794.52 km) |
| Denver to Covilha | 4,852.35 mi (7,809.10 km) |
| Denver to Eiras | 4,814.44 mi (7,748.09 km) |
| Denver to Elvas | 4,925.17 mi (7,926.30 km) |
