| Srem to Santiago do Cacem | 1,573.41 mi (2,532.15 km) |
| Srem to Santo Andre | 1,573.61 mi (2,532.49 km) |
| Srem to Santo Tirso | 1,406.42 mi (2,263.42 km) |
| Srem to Sao Bras de Alportel | 1,587.32 mi (2,554.54 km) |
| Srem to Sao Felix da Marinha | 1,426.08 mi (2,295.06 km) |
| Srem to Sao Joao da Madeira | 1,427.05 mi (2,296.62 km) |
| Srem to Sao Joao de Ver | 1,426.89 mi (2,296.36 km) |
| Srem to Sao Mamede de Infesta | 1,417.67 mi (2,281.52 km) |
| Srem to Sao Pedro do Sul | 1,417.33 mi (2,280.98 km) |
| Srem to Satao | 1,405.16 mi (2,261.39 km) |
| Srem to Seia | 1,418.52 mi (2,282.89 km) |
| Srem to Senhora da Hora | 1,420.31 mi (2,285.77 km) |
| Srem to Serpa | 1,536.10 mi (2,472.12 km) |
| Srem to Serta | 1,463.30 mi (2,354.95 km) |
| Srem to Sesimbra | 1,567.27 mi (2,522.28 km) |
