| Birstonas to Setubal | 1,890.30 mi (3,042.14 km) |
| Birstonas to Sever do Vouga | 1,762.04 mi (2,835.72 km) |
| Birstonas to Silves | 1,942.06 mi (3,125.44 km) |
| Birstonas to Sines | 1,918.11 mi (3,086.90 km) |
| Birstonas to Sintra | 1,894.94 mi (3,049.62 km) |
| Birstonas to Sobrado de Paiva | 1,743.94 mi (2,806.60 km) |
| Birstonas to Sobral de Monte Agraco | 1,875.24 mi (3,017.91 km) |
| Birstonas to Soure | 1,805.07 mi (2,904.97 km) |
| Birstonas to Tabua | 1,767.33 mi (2,844.24 km) |
| Birstonas to Tavira | 1,917.19 mi (3,085.42 km) |
| Birstonas to Tomar | 1,819.01 mi (2,927.41 km) |
| Birstonas to Tondela | 1,761.79 mi (2,835.32 km) |
| Birstonas to Torre de Moncorvo | 1,693.28 mi (2,725.07 km) |
| Birstonas to Torres Novas | 1,829.93 mi (2,945.00 km) |
| Birstonas to Torres Vedras | 1,876.28 mi (3,019.58 km) |
