| Kocaeli to Cascais | 2,077.41 mi (3,343.27 km) |
| Kocaeli to Castelo Branco | 1,958.06 mi (3,151.19 km) |
| Kocaeli to Castro Daire | 1,963.07 mi (3,159.26 km) |
| Kocaeli to Celorico de Basto | 1,959.56 mi (3,153.60 km) |
| Kocaeli to Chamusca | 2,016.90 mi (3,245.88 km) |
| Kocaeli to Chaves | 1,927.99 mi (3,102.80 km) |
| Kocaeli to Cinfaes | 1,970.34 mi (3,170.96 km) |
| Kocaeli to Coimbra | 1,999.20 mi (3,217.40 km) |
| Kocaeli to Condeixa-a-Nova | 2,004.39 mi (3,225.75 km) |
| Kocaeli to Corroios | 2,065.36 mi (3,323.87 km) |
| Kocaeli to Coruche | 2,026.46 mi (3,261.28 km) |
| Kocaeli to Costa de Caparica | 2,069.15 mi (3,329.97 km) |
| Kocaeli to Covilha | 1,950.39 mi (3,138.85 km) |
| Kocaeli to Eiras | 1,998.42 mi (3,216.15 km) |
| Kocaeli to Elvas | 1,956.97 mi (3,149.43 km) |
