| Helston to Cascais | 813.49 mi (1,309.19 km) |
| Helston to Castelo Branco | 718.73 mi (1,156.69 km) |
| Helston to Castro Daire | 648.50 mi (1,043.66 km) |
| Helston to Celorico de Basto | 616.37 mi (991.95 km) |
| Helston to Chamusca | 759.13 mi (1,221.70 km) |
| Helston to Chaves | 587.12 mi (944.88 km) |
| Helston to Cinfaes | 636.93 mi (1,025.04 km) |
| Helston to Coimbra | 700.21 mi (1,126.88 km) |
| Helston to Condeixa-a-Nova | 707.35 mi (1,138.37 km) |
| Helston to Corroios | 816.09 mi (1,313.37 km) |
| Helston to Coruche | 786.25 mi (1,265.34 km) |
| Helston to Costa de Caparica | 815.05 mi (1,311.70 km) |
| Helston to Covilha | 686.82 mi (1,105.33 km) |
| Helston to Eiras | 698.06 mi (1,123.41 km) |
| Helston to Elvas | 781.59 mi (1,257.85 km) |
