| Fort Collins to Cascais | 4,810.95 mi (7,742.47 km) |
| Fort Collins to Castelo Branco | 4,847.46 mi (7,801.23 km) |
| Fort Collins to Castro Daire | 4,784.58 mi (7,700.03 km) |
| Fort Collins to Celorico de Basto | 4,762.06 mi (7,663.80 km) |
| Fort Collins to Chamusca | 4,824.68 mi (7,764.57 km) |
| Fort Collins to Chaves | 4,769.56 mi (7,675.87 km) |
| Fort Collins to Cinfaes | 4,768.00 mi (7,673.35 km) |
| Fort Collins to Coimbra | 4,791.73 mi (7,711.54 km) |
| Fort Collins to Condeixa-a-Nova | 4,792.57 mi (7,712.89 km) |
| Fort Collins to Corroios | 4,826.00 mi (7,766.69 km) |
| Fort Collins to Coruche | 4,838.97 mi (7,787.56 km) |
| Fort Collins to Costa de Caparica | 4,821.09 mi (7,758.79 km) |
| Fort Collins to Covilha | 4,828.18 mi (7,770.21 km) |
| Fort Collins to Eiras | 4,790.68 mi (7,709.86 km) |
| Fort Collins to Elvas | 4,901.91 mi (7,888.86 km) |
