| Merthyr Tudful to Benisa | 915.26 mi (1,472.97 km) |
| Merthyr Tudful to Berga | 709.94 mi (1,142.54 km) |
| Merthyr Tudful to Berja | 1,029.55 mi (1,656.90 km) |
| Merthyr Tudful to Bermeo | 575.86 mi (926.75 km) |
| Merthyr Tudful to Berriozar | 620.54 mi (998.66 km) |
| Merthyr Tudful to Betanzos | 626.42 mi (1,008.13 km) |
| Merthyr Tudful to Betera | 851.08 mi (1,369.68 km) |
| Merthyr Tudful to Bilbao | 586.71 mi (944.22 km) |
| Merthyr Tudful to Binefar | 705.09 mi (1,134.74 km) |
| Merthyr Tudful to Binisalem | 884.70 mi (1,423.78 km) |
| Merthyr Tudful to Blanes | 753.95 mi (1,213.37 km) |
| Merthyr Tudful to Boadilla del Monte | 783.61 mi (1,261.09 km) |
| Merthyr Tudful to Boiro | 679.16 mi (1,093.01 km) |
| Merthyr Tudful to Bolanos de Calatrava | 888.68 mi (1,430.20 km) |
| Merthyr Tudful to Bollullos de la Mitacion | 1,004.63 mi (1,616.79 km) |
