| Seaford to Cascais | 954.06 mi (1,535.40 km) |
| Seaford to Castelo Branco | 841.08 mi (1,353.58 km) |
| Seaford to Castro Daire | 782.90 mi (1,259.96 km) |
| Seaford to Celorico de Basto | 754.84 mi (1,214.81 km) |
| Seaford to Chamusca | 891.95 mi (1,435.46 km) |
| Seaford to Chaves | 720.28 mi (1,159.17 km) |
| Seaford to Cinfaes | 775.38 mi (1,247.86 km) |
| Seaford to Coimbra | 837.12 mi (1,347.21 km) |
| Seaford to Condeixa-a-Nova | 844.62 mi (1,359.29 km) |
| Seaford to Corroios | 953.17 mi (1,533.98 km) |
| Seaford to Coruche | 917.60 mi (1,476.74 km) |
| Seaford to Costa de Caparica | 953.26 mi (1,534.13 km) |
| Seaford to Covilha | 811.58 mi (1,306.12 km) |
| Seaford to Eiras | 835.08 mi (1,343.93 km) |
| Seaford to Elvas | 894.86 mi (1,440.14 km) |
