| Kingsport to Cascais | 3,893.38 mi (6,265.78 km) |
| Kingsport to Castelo Branco | 3,958.42 mi (6,370.47 km) |
| Kingsport to Castro Daire | 3,908.97 mi (6,290.88 km) |
| Kingsport to Celorico de Basto | 3,893.42 mi (6,265.86 km) |
| Kingsport to Chamusca | 3,922.47 mi (6,312.60 km) |
| Kingsport to Chaves | 3,909.80 mi (6,292.21 km) |
| Kingsport to Cinfaes | 3,894.17 mi (6,267.06 km) |
| Kingsport to Coimbra | 3,902.58 mi (6,280.60 km) |
| Kingsport to Condeixa-a-Nova | 3,901.57 mi (6,278.96 km) |
| Kingsport to Corroios | 3,908.89 mi (6,290.74 km) |
| Kingsport to Coruche | 3,930.76 mi (6,325.95 km) |
| Kingsport to Costa de Caparica | 3,903.87 mi (6,282.66 km) |
| Kingsport to Covilha | 3,946.07 mi (6,350.58 km) |
| Kingsport to Eiras | 3,902.04 mi (6,279.72 km) |
| Kingsport to Elvas | 4,001.31 mi (6,439.49 km) |
