| Holyhead to Suhut | 1,946.33 mi (3,132.32 km) |
| Holyhead to Sulakyurt | 1,998.64 mi (3,216.50 km) |
| Holyhead to Sultanbeyli | 1,783.45 mi (2,870.18 km) |
| Holyhead to Sultandagi | 1,973.38 mi (3,175.85 km) |
| Holyhead to Sultanhani | 2,078.77 mi (3,345.46 km) |
| Holyhead to Sultanhisar | 1,884.08 mi (3,032.13 km) |
| Holyhead to Suluova | 2,047.67 mi (3,295.40 km) |
| Holyhead to Sumbas | 2,216.17 mi (3,566.58 km) |
| Holyhead to Sungurlu | 2,025.21 mi (3,259.25 km) |
| Holyhead to Surmene | 2,227.29 mi (3,584.48 km) |
| Holyhead to Suruc | 2,334.73 mi (3,757.39 km) |
| Holyhead to Susehri | 2,176.59 mi (3,502.88 km) |
| Holyhead to Susurluk | 1,787.70 mi (2,877.02 km) |
| Holyhead to Susuz | 2,357.60 mi (3,794.19 km) |
| Holyhead to Sutculer | 2,013.03 mi (3,239.66 km) |
