| Knightdale to Cascais | 3,711.84 mi (5,973.63 km) |
| Knightdale to Castelo Branco | 3,781.79 mi (6,086.20 km) |
| Knightdale to Castro Daire | 3,735.19 mi (6,011.21 km) |
| Knightdale to Celorico de Basto | 3,721.07 mi (5,988.48 km) |
| Knightdale to Chamusca | 3,743.61 mi (6,024.76 km) |
| Knightdale to Chaves | 3,739.00 mi (6,017.33 km) |
| Knightdale to Cinfaes | 3,720.83 mi (5,988.10 km) |
| Knightdale to Coimbra | 3,726.31 mi (5,996.91 km) |
| Knightdale to Condeixa-a-Nova | 3,724.94 mi (5,994.72 km) |
| Knightdale to Corroios | 3,727.34 mi (5,998.57 km) |
| Knightdale to Coruche | 3,750.73 mi (6,036.22 km) |
| Knightdale to Costa de Caparica | 3,722.33 mi (5,990.51 km) |
| Knightdale to Covilha | 3,770.81 mi (6,068.53 km) |
| Knightdale to Eiras | 3,725.85 mi (5,996.18 km) |
| Knightdale to Elvas | 3,822.25 mi (6,151.31 km) |
