| Sleaford to Solofra | 1,102.20 mi (1,773.82 km) |
| Sleaford to Somma Lombardo | 649.80 mi (1,045.75 km) |
| Sleaford to Somma Vesuviana | 1,087.62 mi (1,750.35 km) |
| Sleaford to Sommacampagna | 729.14 mi (1,173.44 km) |
| Sleaford to Sona | 726.86 mi (1,169.77 km) |
| Sleaford to Sondrio | 658.05 mi (1,059.02 km) |
| Sleaford to Sora | 1,015.42 mi (1,634.16 km) |
| Sleaford to Sorbolo | 746.86 mi (1,201.96 km) |
| Sleaford to Soresina | 705.18 mi (1,134.87 km) |
| Sleaford to Sorisole | 674.60 mi (1,085.67 km) |
| Sleaford to Sorrento | 1,099.70 mi (1,769.80 km) |
| Sleaford to Sorso | 941.92 mi (1,515.88 km) |
| Sleaford to Sortino | 1,322.03 mi (2,127.60 km) |
| Sleaford to Soverato Marina | 1,275.77 mi (2,053.15 km) |
| Sleaford to Sovicille | 857.25 mi (1,379.60 km) |
