| Gretna to Santarem | 4,519.13 mi (7,272.83 km) |
| Gretna to Santiago do Cacem | 4,546.88 mi (7,317.50 km) |
| Gretna to Santo Andre | 4,543.54 mi (7,312.12 km) |
| Gretna to Santo Tirso | 4,482.52 mi (7,213.92 km) |
| Gretna to Sao Bras de Alportel | 4,609.68 mi (7,418.57 km) |
| Gretna to Sao Felix da Marinha | 4,481.47 mi (7,212.23 km) |
| Gretna to Sao Joao da Madeira | 4,491.15 mi (7,227.80 km) |
| Gretna to Sao Joao de Ver | 4,486.81 mi (7,220.82 km) |
| Gretna to Sao Mamede de Infesta | 4,478.92 mi (7,208.13 km) |
| Gretna to Sao Pedro do Sul | 4,515.33 mi (7,266.72 km) |
| Gretna to Satao | 4,532.19 mi (7,293.85 km) |
| Gretna to Seia | 4,540.88 mi (7,307.84 km) |
| Gretna to Senhora da Hora | 4,476.72 mi (7,204.58 km) |
| Gretna to Serpa | 4,604.84 mi (7,410.78 km) |
| Gretna to Serta | 4,535.47 mi (7,299.13 km) |
