| Harrow Weald to Sinop | 1,782.35 mi (2,868.41 km) |
| Harrow Weald to Siran | 2,024.62 mi (3,258.32 km) |
| Harrow Weald to Sirnak | 2,279.26 mi (3,668.11 km) |
| Harrow Weald to Sirvan | 2,237.35 mi (3,600.67 km) |
| Harrow Weald to Sivas | 1,953.26 mi (3,143.46 km) |
| Harrow Weald to Sivasli | 1,705.14 mi (2,744.15 km) |
| Harrow Weald to Siverek | 2,136.21 mi (3,437.90 km) |
| Harrow Weald to Sivrice | 2,105.66 mi (3,388.74 km) |
| Harrow Weald to Sivrihisar | 1,737.16 mi (2,795.70 km) |
| Harrow Weald to Sogut | 1,656.50 mi (2,665.89 km) |
| Harrow Weald to Sogutlu | 1,631.28 mi (2,625.29 km) |
| Harrow Weald to Soke | 1,649.57 mi (2,654.72 km) |
| Harrow Weald to Solhan | 2,157.34 mi (3,471.91 km) |
| Harrow Weald to Soma | 1,589.49 mi (2,558.04 km) |
| Harrow Weald to Sorgun | 1,873.57 mi (3,015.21 km) |
