| Penarth to Blue Springs (Missouri) | 4,223.57 mi (6,797.19 km) |
| Penarth to Bluffdale (Utah) | 4,782.08 mi (7,696.02 km) |
| Penarth to Bluffton (Indiana) | 3,788.42 mi (6,096.88 km) |
| Penarth to Bluffton (South Carolina) | 4,013.56 mi (6,459.19 km) |
| Penarth to Blythe (California) | 5,246.42 mi (8,443.30 km) |
| Penarth to Blytheville (Arkansas) | 4,202.23 mi (6,762.84 km) |
| Penarth to Boca Raton (Florida) | 4,265.37 mi (6,864.45 km) |
| Penarth to Boerne (Texas) | 4,862.04 mi (7,824.70 km) |
| Penarth to Bogalusa (Louisiana) | 4,454.31 mi (7,168.52 km) |
| Penarth to Boiling Springs (South Carolina) | 3,922.30 mi (6,312.34 km) |
| Penarth to Boise (Idaho) | 4,750.63 mi (7,645.41 km) |
| Penarth to Bolingbrook (Illinois) | 3,859.94 mi (6,211.98 km) |
| Penarth to Bolivar (Missouri) | 4,259.09 mi (6,854.34 km) |
| Penarth to Bon Air (Virginia) | 3,625.54 mi (5,834.75 km) |
| Penarth to Bonham (Texas) | 4,566.96 mi (7,349.81 km) |
