| Seabrook to Cascais | 3,540.00 mi (5,697.09 km) |
| Seabrook to Castelo Branco | 3,604.35 mi (5,800.64 km) |
| Seabrook to Castro Daire | 3,554.69 mi (5,720.73 km) |
| Seabrook to Celorico de Basto | 3,539.09 mi (5,695.61 km) |
| Seabrook to Chamusca | 3,568.66 mi (5,743.20 km) |
| Seabrook to Chaves | 3,555.44 mi (5,721.93 km) |
| Seabrook to Cinfaes | 3,539.87 mi (5,696.87 km) |
| Seabrook to Coimbra | 3,548.48 mi (5,710.73 km) |
| Seabrook to Condeixa-a-Nova | 3,547.50 mi (5,709.15 km) |
| Seabrook to Corroios | 3,555.51 mi (5,722.04 km) |
| Seabrook to Coruche | 3,577.12 mi (5,756.82 km) |
| Seabrook to Costa de Caparica | 3,550.49 mi (5,713.96 km) |
| Seabrook to Covilha | 3,591.88 mi (5,780.57 km) |
| Seabrook to Eiras | 3,547.93 mi (5,709.84 km) |
| Seabrook to Elvas | 3,647.52 mi (5,870.11 km) |
