| Donostia to Cascais | 501.87 mi (807.68 km) |
| Donostia to Castelo Branco | 374.03 mi (601.95 km) |
| Donostia to Castro Daire | 347.84 mi (559.79 km) |
| Donostia to Celorico de Basto | 335.15 mi (539.37 km) |
| Donostia to Chamusca | 434.59 mi (699.40 km) |
| Donostia to Chaves | 300.07 mi (482.91 km) |
| Donostia to Cinfaes | 350.15 mi (563.52 km) |
| Donostia to Coimbra | 395.55 mi (636.58 km) |
| Donostia to Condeixa-a-Nova | 402.37 mi (647.55 km) |
| Donostia to Corroios | 495.29 mi (797.10 km) |
| Donostia to Coruche | 454.64 mi (731.67 km) |
| Donostia to Costa de Caparica | 497.23 mi (800.21 km) |
| Donostia to Covilha | 353.22 mi (568.45 km) |
| Donostia to Eiras | 394.10 mi (634.24 km) |
| Donostia to Elvas | 408.67 mi (657.68 km) |
