| Slough to Karlovo | 1,333.33 mi (2,145.79 km) |
| Slough to Karnobat | 1,423.71 mi (2,291.24 km) |
| Slough to Kavarna | 1,449.45 mi (2,332.67 km) |
| Slough to Kazanlak | 1,358.80 mi (2,186.78 km) |
| Slough to Knezha | 1,269.31 mi (2,042.76 km) |
| Slough to Kostinbrod | 1,261.26 mi (2,029.79 km) |
| Slough to Kozloduy | 1,243.83 mi (2,001.76 km) |
| Slough to Kyustendil | 1,262.15 mi (2,031.24 km) |
| Slough to Levski | 1,318.00 mi (2,121.11 km) |
| Slough to Lom | 1,221.71 mi (1,966.16 km) |
| Slough to Lovech | 1,309.88 mi (2,108.05 km) |
| Slough to Lukovit | 1,284.59 mi (2,067.35 km) |
| Slough to Lyaskovets | 1,352.64 mi (2,176.86 km) |
| Slough to Mezdra | 1,267.41 mi (2,039.70 km) |
| Slough to Momchilgrad | 1,404.60 mi (2,260.48 km) |
