| Boppard to Serik | 1,482.79 mi (2,386.32 km) |
| Boppard to Serinhisar | 1,379.86 mi (2,220.67 km) |
| Boppard to Serinyol | 1,711.66 mi (2,754.66 km) |
| Boppard to Seydisehir | 1,487.49 mi (2,393.89 km) |
| Boppard to Seyhan | 1,647.47 mi (2,651.34 km) |
| Boppard to Seyitgazi | 1,346.43 mi (2,166.88 km) |
| Boppard to Siirt | 1,882.95 mi (3,030.32 km) |
| Boppard to Sile | 1,226.24 mi (1,973.44 km) |
| Boppard to Silifke | 1,620.07 mi (2,607.24 km) |
| Boppard to Silivri | 1,175.33 mi (1,891.50 km) |
| Boppard to Silopi | 1,934.49 mi (3,113.25 km) |
| Boppard to Simav | 1,295.62 mi (2,085.10 km) |
| Boppard to Sinanpasa | 1,361.00 mi (2,190.33 km) |
| Boppard to Sindirgi | 1,256.82 mi (2,022.66 km) |
| Boppard to Sinop | 1,425.76 mi (2,294.53 km) |
