| Merthyr Tudful to Bel Air (Maryland) | 3,470.50 mi (5,585.23 km) |
| Merthyr Tudful to Bel Air North (Maryland) | 3,470.76 mi (5,585.65 km) |
| Merthyr Tudful to Bel Air South (Maryland) | 3,470.51 mi (5,585.25 km) |
| Merthyr Tudful to Belgrade (Montana) | 4,455.40 mi (7,170.27 km) |
| Merthyr Tudful to Bell (California) | 5,326.11 mi (8,571.55 km) |
| Merthyr Tudful to Bell Gardens (California) | 5,326.07 mi (8,571.48 km) |
| Merthyr Tudful to Bella Vista (Arkansas) | 4,330.79 mi (6,969.74 km) |
| Merthyr Tudful to Bellair-Meadowbrook Terrace (Florida) | 4,133.02 mi (6,651.45 km) |
| Merthyr Tudful to Bellaire (Texas) | 4,719.94 mi (7,596.01 km) |
| Merthyr Tudful to Belle Chasse (Louisiana) | 4,491.55 mi (7,228.44 km) |
| Merthyr Tudful to Belle Glade (Florida) | 4,261.39 mi (6,858.05 km) |
| Merthyr Tudful to Bellefontaine (Ohio) | 3,733.20 mi (6,008.00 km) |
| Merthyr Tudful to Bellefontaine Neighbors (Missouri) | 4,062.51 mi (6,537.97 km) |
| Merthyr Tudful to Belleville (Illinois) | 4,064.52 mi (6,541.21 km) |
| Merthyr Tudful to Bellevue (Nebraska) | 4,164.47 mi (6,702.07 km) |
