| Sleaford to Sesimbra | 1,087.40 mi (1,750.00 km) |
| Sleaford to Setubal | 1,078.43 mi (1,735.56 km) |
| Sleaford to Sever do Vouga | 925.49 mi (1,489.44 km) |
| Sleaford to Silves | 1,158.59 mi (1,864.57 km) |
| Sleaford to Sines | 1,115.16 mi (1,794.68 km) |
| Sleaford to Sintra | 1,069.68 mi (1,721.49 km) |
| Sleaford to Sobrado de Paiva | 904.28 mi (1,455.30 km) |
| Sleaford to Sobral de Monte Agraco | 1,051.07 mi (1,691.54 km) |
| Sleaford to Soure | 974.61 mi (1,568.48 km) |
| Sleaford to Tabua | 943.47 mi (1,518.37 km) |
| Sleaford to Tavira | 1,151.18 mi (1,852.64 km) |
| Sleaford to Tomar | 999.84 mi (1,609.09 km) |
| Sleaford to Tondela | 934.28 mi (1,503.58 km) |
| Sleaford to Torre de Moncorvo | 873.23 mi (1,405.33 km) |
| Sleaford to Torres Novas | 1,010.60 mi (1,626.41 km) |
