| Towcester to Karlovo | 1,362.87 mi (2,193.33 km) |
| Towcester to Karnobat | 1,451.52 mi (2,335.99 km) |
| Towcester to Kavarna | 1,475.02 mi (2,373.82 km) |
| Towcester to Kazanlak | 1,387.90 mi (2,233.61 km) |
| Towcester to Knezha | 1,298.12 mi (2,089.13 km) |
| Towcester to Kostinbrod | 1,291.87 mi (2,079.06 km) |
| Towcester to Kozloduy | 1,272.47 mi (2,047.84 km) |
| Towcester to Kyustendil | 1,294.01 mi (2,082.50 km) |
| Towcester to Levski | 1,346.16 mi (2,166.44 km) |
| Towcester to Lom | 1,250.69 mi (2,012.80 km) |
| Towcester to Lovech | 1,338.75 mi (2,154.51 km) |
| Towcester to Lukovit | 1,313.81 mi (2,114.37 km) |
| Towcester to Lyaskovets | 1,380.75 mi (2,222.10 km) |
| Towcester to Mezdra | 1,297.10 mi (2,087.48 km) |
| Towcester to Momchilgrad | 1,435.21 mi (2,309.75 km) |
