| Huntsville to Cascais | 4,155.61 mi (6,687.81 km) |
| Huntsville to Castelo Branco | 4,220.71 mi (6,792.58 km) |
| Huntsville to Castro Daire | 4,171.17 mi (6,712.84 km) |
| Huntsville to Celorico de Basto | 4,155.54 mi (6,687.70 km) |
| Huntsville to Chamusca | 4,184.77 mi (6,734.73 km) |
| Huntsville to Chaves | 4,171.81 mi (6,713.88 km) |
| Huntsville to Cinfaes | 4,156.34 mi (6,688.99 km) |
| Huntsville to Coimbra | 4,164.87 mi (6,702.70 km) |
| Huntsville to Condeixa-a-Nova | 4,163.85 mi (6,701.07 km) |
| Huntsville to Corroios | 4,171.12 mi (6,712.77 km) |
| Huntsville to Coruche | 4,193.04 mi (6,748.05 km) |
| Huntsville to Costa de Caparica | 4,166.10 mi (6,704.69 km) |
| Huntsville to Covilha | 4,208.32 mi (6,772.64 km) |
| Huntsville to Eiras | 4,164.32 mi (6,701.82 km) |
| Huntsville to Elvas | 4,263.61 mi (6,861.62 km) |
