| Gelsenkirchen to Serik | 1,546.13 mi (2,488.26 km) |
| Gelsenkirchen to Serinhisar | 1,445.14 mi (2,325.73 km) |
| Gelsenkirchen to Serinyol | 1,767.31 mi (2,844.21 km) |
| Gelsenkirchen to Seydisehir | 1,548.40 mi (2,491.90 km) |
| Gelsenkirchen to Seyhan | 1,703.24 mi (2,741.10 km) |
| Gelsenkirchen to Seyitgazi | 1,404.55 mi (2,260.40 km) |
| Gelsenkirchen to Siirt | 1,925.90 mi (3,099.44 km) |
| Gelsenkirchen to Sile | 1,281.45 mi (2,062.29 km) |
| Gelsenkirchen to Silifke | 1,679.55 mi (2,702.97 km) |
| Gelsenkirchen to Silivri | 1,233.58 mi (1,985.26 km) |
| Gelsenkirchen to Silopi | 1,978.20 mi (3,183.60 km) |
| Gelsenkirchen to Simav | 1,357.95 mi (2,185.41 km) |
| Gelsenkirchen to Sinanpasa | 1,421.74 mi (2,288.07 km) |
| Gelsenkirchen to Sindirgi | 1,320.35 mi (2,124.89 km) |
| Gelsenkirchen to Sinop | 1,468.18 mi (2,362.81 km) |
