| Highgate to Sinop | 1,773.79 mi (2,854.63 km) |
| Highgate to Siran | 2,016.07 mi (3,244.55 km) |
| Highgate to Sirnak | 2,270.69 mi (3,654.32 km) |
| Highgate to Sirvan | 2,228.79 mi (3,586.89 km) |
| Highgate to Sivas | 1,944.66 mi (3,129.62 km) |
| Highgate to Sivasli | 1,696.54 mi (2,730.32 km) |
| Highgate to Siverek | 2,127.60 mi (3,424.04 km) |
| Highgate to Sivrice | 2,097.07 mi (3,374.90 km) |
| Highgate to Sivrihisar | 1,728.53 mi (2,781.81 km) |
| Highgate to Sogut | 1,647.88 mi (2,652.00 km) |
| Highgate to Sogutlu | 1,622.65 mi (2,611.40 km) |
| Highgate to Soke | 1,641.06 mi (2,641.03 km) |
| Highgate to Solhan | 2,148.79 mi (3,458.14 km) |
| Highgate to Soma | 1,580.92 mi (2,544.25 km) |
| Highgate to Sorgun | 1,864.95 mi (3,001.34 km) |
