| Merthyr Tudful to Belper | 119.72 mi (192.67 km) |
| Merthyr Tudful to Bentley | 156.11 mi (251.24 km) |
| Merthyr Tudful to Berkhampstead | 120.53 mi (193.98 km) |
| Merthyr Tudful to Berwick-Upon-Tweed | 283.79 mi (456.71 km) |
| Merthyr Tudful to Beverley | 190.48 mi (306.54 km) |
| Merthyr Tudful to Bewdley | 62.85 mi (101.15 km) |
| Merthyr Tudful to Bexleyheath | 152.15 mi (244.86 km) |
| Merthyr Tudful to Bicester | 95.76 mi (154.12 km) |
| Merthyr Tudful to Bickenhill | 85.07 mi (136.90 km) |
| Merthyr Tudful to Bickley | 148.95 mi (239.70 km) |
| Merthyr Tudful to Biddulph | 107.89 mi (173.64 km) |
| Merthyr Tudful to Bideford | 61.70 mi (99.30 km) |
| Merthyr Tudful to Bidston | 115.32 mi (185.58 km) |
| Merthyr Tudful to Biggleswade | 135.15 mi (217.50 km) |
| Merthyr Tudful to Billericay | 162.80 mi (262.00 km) |
