| Merthyr Tudful to Sprimont | 401.26 mi (645.76 km) |
| Merthyr Tudful to Stabroek | 333.88 mi (537.32 km) |
| Merthyr Tudful to Staden | 280.77 mi (451.86 km) |
| Merthyr Tudful to Steenokkerzeel | 345.01 mi (555.24 km) |
| Merthyr Tudful to Stekene | 321.03 mi (516.64 km) |
| Merthyr Tudful to Strombeek-Bever | 338.42 mi (544.63 km) |
| Merthyr Tudful to Temse | 329.15 mi (529.71 km) |
| Merthyr Tudful to Ternat | 332.02 mi (534.33 km) |
| Merthyr Tudful to Tervuren | 346.26 mi (557.25 km) |
| Merthyr Tudful to Tessenderlo | 367.70 mi (591.75 km) |
| Merthyr Tudful to Theux | 406.82 mi (654.71 km) |
| Merthyr Tudful to Thuin | 346.62 mi (557.84 km) |
| Merthyr Tudful to Tielt | 293.58 mi (472.47 km) |
| Merthyr Tudful to Tienen | 364.92 mi (587.28 km) |
| Merthyr Tudful to Tongeren | 387.76 mi (624.04 km) |
