| Boppard to Sulakyurt | 1,439.34 mi (2,316.39 km) |
| Boppard to Sultanbeyli | 1,220.88 mi (1,964.82 km) |
| Boppard to Sultandagi | 1,410.10 mi (2,269.34 km) |
| Boppard to Sultanhani | 1,516.33 mi (2,440.30 km) |
| Boppard to Sultanhisar | 1,322.52 mi (2,128.40 km) |
| Boppard to Suluova | 1,493.35 mi (2,403.32 km) |
| Boppard to Sumbas | 1,654.83 mi (2,663.20 km) |
| Boppard to Sungurlu | 1,466.84 mi (2,360.66 km) |
| Boppard to Surmene | 1,682.81 mi (2,708.23 km) |
| Boppard to Suruc | 1,775.33 mi (2,857.11 km) |
| Boppard to Susehri | 1,624.76 mi (2,614.80 km) |
| Boppard to Susurluk | 1,224.40 mi (1,970.48 km) |
| Boppard to Susuz | 1,820.01 mi (2,929.02 km) |
| Boppard to Sutculer | 1,449.84 mi (2,333.29 km) |
| Boppard to Talas | 1,580.00 mi (2,542.76 km) |
