| Covington to Cascais | 3,914.66 mi (6,300.03 km) |
| Covington to Castelo Branco | 3,972.81 mi (6,393.62 km) |
| Covington to Castro Daire | 3,919.73 mi (6,308.19 km) |
| Covington to Celorico de Basto | 3,902.37 mi (6,280.26 km) |
| Covington to Chamusca | 3,939.97 mi (6,340.77 km) |
| Covington to Chaves | 3,916.68 mi (6,303.29 km) |
| Covington to Cinfaes | 3,904.40 mi (6,283.53 km) |
| Covington to Coimbra | 3,916.68 mi (6,303.28 km) |
| Covington to Condeixa-a-Nova | 3,916.12 mi (6,302.38 km) |
| Covington to Corroios | 3,930.13 mi (6,324.94 km) |
| Covington to Coruche | 3,949.84 mi (6,356.65 km) |
| Covington to Costa de Caparica | 3,925.12 mi (6,316.86 km) |
| Covington to Covilha | 3,958.66 mi (6,370.84 km) |
| Covington to Eiras | 3,916.00 mi (6,302.19 km) |
| Covington to Elvas | 4,018.84 mi (6,467.71 km) |
