| Greenock to Cascais | 1,210.93 mi (1,948.80 km) |
| Greenock to Castelo Branco | 1,121.66 mi (1,805.14 km) |
| Greenock to Castro Daire | 1,049.67 mi (1,689.28 km) |
| Greenock to Celorico de Basto | 1,016.95 mi (1,636.62 km) |
| Greenock to Chamusca | 1,159.51 mi (1,866.05 km) |
| Greenock to Chaves | 989.26 mi (1,592.06 km) |
| Greenock to Cinfaes | 1,037.23 mi (1,669.27 km) |
| Greenock to Coimbra | 1,100.14 mi (1,770.50 km) |
| Greenock to Condeixa-a-Nova | 1,107.09 mi (1,781.70 km) |
| Greenock to Corroios | 1,214.66 mi (1,954.80 km) |
| Greenock to Coruche | 1,186.75 mi (1,909.89 km) |
| Greenock to Costa de Caparica | 1,213.27 mi (1,952.57 km) |
| Greenock to Covilha | 1,089.57 mi (1,753.50 km) |
| Greenock to Eiras | 1,097.98 mi (1,767.02 km) |
| Greenock to Elvas | 1,185.42 mi (1,907.75 km) |
