| Merthyr Tudful to Bollullos par del Condado | 1,007.27 mi (1,621.05 km) |
| Merthyr Tudful to Bormujos | 1,001.91 mi (1,612.41 km) |
| Merthyr Tudful to Brenes | 988.09 mi (1,590.18 km) |
| Merthyr Tudful to Brunete | 784.27 mi (1,262.17 km) |
| Merthyr Tudful to Bueu | 698.79 mi (1,124.59 km) |
| Merthyr Tudful to Bullas | 949.73 mi (1,528.44 km) |
| Merthyr Tudful to Bunol | 860.48 mi (1,384.80 km) |
| Merthyr Tudful to Burela de Cabo | 589.39 mi (948.53 km) |
| Merthyr Tudful to Burgos | 649.80 mi (1,045.76 km) |
| Merthyr Tudful to Burjasot | 857.38 mi (1,379.82 km) |
| Merthyr Tudful to Burriana | 833.92 mi (1,342.06 km) |
| Merthyr Tudful to Cabanaquinta | 605.93 mi (975.15 km) |
| Merthyr Tudful to Cabanillas del Campo | 767.29 mi (1,234.83 km) |
| Merthyr Tudful to Cabra | 987.73 mi (1,589.60 km) |
| Merthyr Tudful to Caceres | 859.10 mi (1,382.58 km) |
