| Merthyr Tudful to Stannington | 137.93 mi (221.98 km) |
| Merthyr Tudful to Stansted Mountfitchet | 153.08 mi (246.37 km) |
| Merthyr Tudful to Stanwell | 126.29 mi (203.24 km) |
| Merthyr Tudful to Stapleford | 120.84 mi (194.48 km) |
| Merthyr Tudful to Staveley | 135.67 mi (218.33 km) |
| Merthyr Tudful to Stepney | 143.75 mi (231.34 km) |
| Merthyr Tudful to Stevenage | 136.07 mi (218.99 km) |
| Merthyr Tudful to Stevenston | 275.43 mi (443.27 km) |
| Merthyr Tudful to Stirling | 303.04 mi (487.69 km) |
| Merthyr Tudful to Stockport | 126.09 mi (202.93 km) |
| Merthyr Tudful to Stocksbridge | 141.45 mi (227.64 km) |
| Merthyr Tudful to Stockton-on-Tees | 213.10 mi (342.96 km) |
| Merthyr Tudful to Stoke Gifford | 38.87 mi (62.56 km) |
| Merthyr Tudful to Stoke-on-Trent | 100.41 mi (161.59 km) |
| Merthyr Tudful to Stone | 95.29 mi (153.35 km) |
