| East Retford to Karlovo | 1,389.29 mi (2,235.85 km) |
| East Retford to Karnobat | 1,474.05 mi (2,372.26 km) |
| East Retford to Kavarna | 1,492.82 mi (2,402.47 km) |
| East Retford to Kazanlak | 1,413.31 mi (2,274.50 km) |
| East Retford to Knezha | 1,323.15 mi (2,129.41 km) |
| East Retford to Kostinbrod | 1,320.79 mi (2,125.60 km) |
| East Retford to Kozloduy | 1,297.21 mi (2,087.65 km) |
| East Retford to Kyustendil | 1,325.65 mi (2,133.43 km) |
| East Retford to Levski | 1,369.69 mi (2,204.30 km) |
| East Retford to Lom | 1,276.23 mi (2,053.89 km) |
| East Retford to Lovech | 1,363.79 mi (2,194.81 km) |
| East Retford to Lukovit | 1,339.67 mi (2,155.99 km) |
| East Retford to Lyaskovets | 1,404.08 mi (2,259.65 km) |
| East Retford to Mezdra | 1,324.01 mi (2,130.79 km) |
| East Retford to Momchilgrad | 1,463.79 mi (2,355.74 km) |
