| Staines-upon-Thames to Sangeorgiu de Mures | 1,175.05 mi (1,891.06 km) |
| Staines-upon-Thames to Sangeorz-Bai | 1,160.62 mi (1,867.84 km) |
| Staines-upon-Thames to Sannicolau Mare | 1,026.89 mi (1,652.62 km) |
| Staines-upon-Thames to Santana | 1,054.97 mi (1,697.81 km) |
| Staines-upon-Thames to Satu Mare | 1,072.47 mi (1,725.97 km) |
| Staines-upon-Thames to Scobinti | 1,257.18 mi (2,023.23 km) |
| Staines-upon-Thames to Scornicesti | 1,244.12 mi (2,002.22 km) |
| Staines-upon-Thames to Sebes | 1,155.23 mi (1,859.16 km) |
| Staines-upon-Thames to Seini | 1,090.56 mi (1,755.08 km) |
| Staines-upon-Thames to Sfantu-Gheorghe | 1,252.77 mi (2,016.13 km) |
| Staines-upon-Thames to Sibiu | 1,185.37 mi (1,907.67 km) |
| Staines-upon-Thames to Sighetu Marmatiei | 1,111.98 mi (1,789.55 km) |
| Staines-upon-Thames to Sighisoara | 1,199.11 mi (1,929.77 km) |
| Staines-upon-Thames to Simeria | 1,135.07 mi (1,826.71 km) |
| Staines-upon-Thames to Sinaia | 1,259.45 mi (2,026.89 km) |
