| Helsinki to Castelo Branco | 1,976.34 mi (3,180.61 km) |
| Helsinki to Castro Daire | 1,927.63 mi (3,102.22 km) |
| Helsinki to Celorico de Basto | 1,902.47 mi (3,061.72 km) |
| Helsinki to Chamusca | 2,032.30 mi (3,270.68 km) |
| Helsinki to Chaves | 1,866.45 mi (3,003.76 km) |
| Helsinki to Cinfaes | 1,922.40 mi (3,093.81 km) |
| Helsinki to Coimbra | 1,981.55 mi (3,189.00 km) |
| Helsinki to Condeixa-a-Nova | 1,989.04 mi (3,201.05 km) |
| Helsinki to Corroios | 2,094.46 mi (3,370.71 km) |
| Helsinki to Coruche | 2,056.19 mi (3,309.12 km) |
| Helsinki to Costa de Caparica | 2,095.27 mi (3,372.01 km) |
| Helsinki to Covilha | 1,949.65 mi (3,137.65 km) |
| Helsinki to Eiras | 1,979.63 mi (3,185.91 km) |
| Helsinki to Elvas | 2,020.93 mi (3,252.38 km) |
| Helsinki to Entroncamento | 2,025.24 mi (3,259.31 km) |
