| Syston to Santarem | 998.20 mi (1,606.45 km) |
| Syston to Santiago do Cacem | 1,078.40 mi (1,735.51 km) |
| Syston to Santo Andre | 1,077.02 mi (1,733.29 km) |
| Syston to Santo Tirso | 857.91 mi (1,380.67 km) |
| Syston to Sao Bras de Alportel | 1,123.53 mi (1,808.15 km) |
| Syston to Sao Felix da Marinha | 880.13 mi (1,416.43 km) |
| Syston to Sao Joao da Madeira | 886.47 mi (1,426.63 km) |
| Syston to Sao Joao de Ver | 883.95 mi (1,422.57 km) |
| Syston to Sao Mamede de Infesta | 869.01 mi (1,398.53 km) |
| Syston to Sao Pedro do Sul | 888.49 mi (1,429.88 km) |
| Syston to Satao | 883.92 mi (1,422.53 km) |
| Syston to Seia | 903.84 mi (1,454.59 km) |
| Syston to Senhora da Hora | 870.88 mi (1,401.54 km) |
| Syston to Serpa | 1,066.46 mi (1,716.30 km) |
| Syston to Serta | 951.21 mi (1,530.83 km) |
