| Dumbarton to Cascais | 1,212.57 mi (1,951.45 km) |
| Dumbarton to Castelo Branco | 1,122.70 mi (1,806.82 km) |
| Dumbarton to Castro Daire | 1,050.93 mi (1,691.31 km) |
| Dumbarton to Celorico de Basto | 1,018.26 mi (1,638.73 km) |
| Dumbarton to Chamusca | 1,160.88 mi (1,868.25 km) |
| Dumbarton to Chaves | 990.39 mi (1,593.89 km) |
| Dumbarton to Cinfaes | 1,038.58 mi (1,671.44 km) |
| Dumbarton to Coimbra | 1,101.54 mi (1,772.75 km) |
| Dumbarton to Condeixa-a-Nova | 1,108.51 mi (1,783.98 km) |
| Dumbarton to Corroios | 1,216.21 mi (1,957.30 km) |
| Dumbarton to Coruche | 1,188.11 mi (1,912.08 km) |
| Dumbarton to Costa de Caparica | 1,214.85 mi (1,955.11 km) |
| Dumbarton to Covilha | 1,090.64 mi (1,755.21 km) |
| Dumbarton to Eiras | 1,099.38 mi (1,769.28 km) |
| Dumbarton to Elvas | 1,186.30 mi (1,909.16 km) |
