| Columbia Heights to Cascais | 4,137.62 mi (6,658.86 km) |
| Columbia Heights to Castelo Branco | 4,175.66 mi (6,720.08 km) |
| Columbia Heights to Castro Daire | 4,113.57 mi (6,620.15 km) |
| Columbia Heights to Celorico de Basto | 4,091.53 mi (6,584.69 km) |
| Columbia Heights to Chamusca | 4,152.08 mi (6,682.12 km) |
| Columbia Heights to Chaves | 4,099.77 mi (6,597.94 km) |
| Columbia Heights to Cinfaes | 4,097.09 mi (6,593.63 km) |
| Columbia Heights to Coimbra | 4,119.82 mi (6,630.21 km) |
| Columbia Heights to Condeixa-a-Nova | 4,120.55 mi (6,631.38 km) |
| Columbia Heights to Corroios | 4,152.71 mi (6,683.14 km) |
| Columbia Heights to Coruche | 4,166.08 mi (6,704.66 km) |
| Columbia Heights to Costa de Caparica | 4,147.79 mi (6,675.22 km) |
| Columbia Heights to Covilha | 4,156.80 mi (6,689.73 km) |
| Columbia Heights to Eiras | 4,118.80 mi (6,628.57 km) |
| Columbia Heights to Elvas | 4,229.51 mi (6,806.73 km) |
