| Dumbarton to Santarem | 1,170.29 mi (1,883.40 km) |
| Dumbarton to Santiago do Cacem | 1,253.74 mi (2,017.70 km) |
| Dumbarton to Santo Andre | 1,251.81 mi (2,014.60 km) |
| Dumbarton to Santo Tirso | 1,025.08 mi (1,649.70 km) |
| Dumbarton to Sao Bras de Alportel | 1,308.11 mi (2,105.19 km) |
| Dumbarton to Sao Felix da Marinha | 1,046.74 mi (1,684.57 km) |
| Dumbarton to Sao Joao da Madeira | 1,055.05 mi (1,697.94 km) |
| Dumbarton to Sao Joao de Ver | 1,051.65 mi (1,692.46 km) |
| Dumbarton to Sao Mamede de Infesta | 1,035.23 mi (1,666.03 km) |
| Dumbarton to Sao Pedro do Sul | 1,062.10 mi (1,709.28 km) |
| Dumbarton to Satao | 1,061.10 mi (1,707.67 km) |
| Dumbarton to Seia | 1,082.28 mi (1,741.76 km) |
| Dumbarton to Senhora da Hora | 1,036.59 mi (1,668.23 km) |
| Dumbarton to Serpa | 1,251.94 mi (2,014.80 km) |
| Dumbarton to Serta | 1,127.44 mi (1,814.43 km) |
