| Penarth to Karlovo | 1,438.89 mi (2,315.67 km) |
| Penarth to Karnobat | 1,530.74 mi (2,463.48 km) |
| Penarth to Kavarna | 1,558.05 mi (2,507.44 km) |
| Penarth to Kazanlak | 1,464.77 mi (2,357.31 km) |
| Penarth to Knezha | 1,375.59 mi (2,213.80 km) |
| Penarth to Kostinbrod | 1,365.79 mi (2,198.02 km) |
| Penarth to Kozloduy | 1,350.28 mi (2,173.07 km) |
| Penarth to Kyustendil | 1,365.26 mi (2,197.18 km) |
| Penarth to Levski | 1,424.80 mi (2,292.99 km) |
| Penarth to Lom | 1,327.87 mi (2,137.00 km) |
| Penarth to Lovech | 1,416.08 mi (2,278.97 km) |
| Penarth to Lukovit | 1,390.49 mi (2,237.78 km) |
| Penarth to Lyaskovets | 1,459.47 mi (2,348.78 km) |
| Penarth to Mezdra | 1,372.88 mi (2,209.44 km) |
| Penarth to Momchilgrad | 1,509.02 mi (2,428.53 km) |
