| Radford to Karlovo | 5,204.04 mi (8,375.10 km) |
| Radford to Karnobat | 5,291.67 mi (8,516.11 km) |
| Radford to Kavarna | 5,310.01 mi (8,545.63 km) |
| Radford to Kazanlak | 5,229.07 mi (8,415.38 km) |
| Radford to Knezha | 5,139.22 mi (8,270.78 km) |
| Radford to Kostinbrod | 5,132.31 mi (8,259.66 km) |
| Radford to Kozloduy | 5,113.50 mi (8,229.38 km) |
| Radford to Kyustendil | 5,132.29 mi (8,259.62 km) |
| Radford to Levski | 5,186.81 mi (8,347.36 km) |
| Radford to Lom | 5,091.86 mi (8,194.56 km) |
| Radford to Lovech | 5,179.86 mi (8,336.18 km) |
| Radford to Lukovit | 5,155.00 mi (8,296.18 km) |
| Radford to Lyaskovets | 5,221.32 mi (8,402.90 km) |
| Radford to Mezdra | 5,138.23 mi (8,269.18 km) |
| Radford to Momchilgrad | 5,275.65 mi (8,490.33 km) |
