| Penarth to Bountiful (Utah) | 4,758.36 mi (7,657.84 km) |
| Penarth to Bourbonnais (Illinois) | 3,874.47 mi (6,235.35 km) |
| Penarth to Bowie (Maryland) | 3,527.01 mi (5,676.17 km) |
| Penarth to Bowling Green (Kentucky) | 4,013.52 mi (6,459.13 km) |
| Penarth to Bowling Green (Ohio) | 3,699.58 mi (5,953.90 km) |
| Penarth to Box Elder (South Dakota) | 4,294.13 mi (6,910.74 km) |
| Penarth to Boynton Beach (Florida) | 4,256.58 mi (6,850.30 km) |
| Penarth to Bozeman (Montana) | 4,477.90 mi (7,206.48 km) |
| Penarth to Bradenton (Florida) | 4,314.61 mi (6,943.70 km) |
| Penarth to Bradfordville (Florida) | 4,230.44 mi (6,808.24 km) |
| Penarth to Bradley (Illinois) | 3,874.04 mi (6,234.67 km) |
| Penarth to Bradley Gardens (New Jersey) | 3,371.20 mi (5,425.42 km) |
| Penarth to Brainerd (Minnesota) | 3,874.69 mi (6,235.71 km) |
| Penarth to Brambleton (Virginia) | 3,558.55 mi (5,726.94 km) |
| Penarth to Brandermill (Virginia) | 3,632.73 mi (5,846.31 km) |
