| Retie to Karnobat | 1,186.77 mi (1,909.92 km) |
| Retie to Kavarna | 1,209.12 mi (1,945.89 km) |
| Retie to Kazanlak | 1,124.41 mi (1,809.56 km) |
| Retie to Knezha | 1,034.40 mi (1,664.70 km) |
| Retie to Kostinbrod | 1,030.54 mi (1,658.49 km) |
| Retie to Kozloduy | 1,008.59 mi (1,623.16 km) |
| Retie to Kyustendil | 1,034.89 mi (1,665.49 km) |
| Retie to Levski | 1,081.76 mi (1,740.93 km) |
| Retie to Lom | 987.21 mi (1,588.76 km) |
| Retie to Lovech | 1,075.05 mi (1,730.12 km) |
| Retie to Lukovit | 1,050.53 mi (1,690.66 km) |
| Retie to Lyaskovets | 1,116.28 mi (1,796.49 km) |
| Retie to Mezdra | 1,034.42 mi (1,664.75 km) |
| Retie to Momchilgrad | 1,173.68 mi (1,888.85 km) |
| Retie to Montana | 1,004.53 mi (1,616.64 km) |
