| East Islip to Cascais | 3,315.40 mi (5,335.61 km) |
| East Islip to Castelo Branco | 3,378.32 mi (5,436.88 km) |
| East Islip to Castro Daire | 3,328.02 mi (5,355.93 km) |
| East Islip to Celorico de Basto | 3,312.13 mi (5,330.36 km) |
| East Islip to Chamusca | 3,343.23 mi (5,380.41 km) |
| East Islip to Chaves | 3,328.19 mi (5,356.21 km) |
| East Islip to Cinfaes | 3,313.11 mi (5,331.94 km) |
| East Islip to Coimbra | 3,322.39 mi (5,346.87 km) |
| East Islip to Condeixa-a-Nova | 3,321.49 mi (5,345.41 km) |
| East Islip to Corroios | 3,330.90 mi (5,360.57 km) |
| East Islip to Coruche | 3,352.03 mi (5,394.57 km) |
| East Islip to Costa de Caparica | 3,325.88 mi (5,352.49 km) |
| East Islip to Covilha | 3,365.52 mi (5,416.29 km) |
| East Islip to Eiras | 3,321.81 mi (5,345.93 km) |
| East Islip to Elvas | 3,422.11 mi (5,507.36 km) |
