| Smyrna to Cascais | 4,076.56 mi (6,560.59 km) |
| Smyrna to Castelo Branco | 4,145.16 mi (6,671.00 km) |
| Smyrna to Castro Daire | 4,097.62 mi (6,594.47 km) |
| Smyrna to Celorico de Basto | 4,082.98 mi (6,570.92 km) |
| Smyrna to Chamusca | 4,107.64 mi (6,610.60 km) |
| Smyrna to Chaves | 4,100.33 mi (6,598.85 km) |
| Smyrna to Cinfaes | 4,083.10 mi (6,571.11 km) |
| Smyrna to Coimbra | 4,089.56 mi (6,581.51 km) |
| Smyrna to Condeixa-a-Nova | 4,088.30 mi (6,579.49 km) |
| Smyrna to Corroios | 4,092.06 mi (6,585.54 km) |
| Smyrna to Coruche | 4,115.08 mi (6,622.58 km) |
| Smyrna to Costa de Caparica | 4,087.05 mi (6,577.47 km) |
| Smyrna to Covilha | 4,133.74 mi (6,652.62 km) |
| Smyrna to Eiras | 4,089.08 mi (6,580.73 km) |
| Smyrna to Elvas | 4,186.35 mi (6,737.27 km) |
