| Karhula to Devnya | 1,195.52 mi (1,924.01 km) |
| Karhula to Dimitrovgrad | 1,277.08 mi (2,055.27 km) |
| Karhula to Dobrich | 1,171.64 mi (1,885.58 km) |
| Karhula to Dospat | 1,308.73 mi (2,106.19 km) |
| Karhula to Dupnitsa | 1,271.16 mi (2,045.74 km) |
| Karhula to Elhovo | 1,267.87 mi (2,040.45 km) |
| Karhula to Etropole | 1,227.88 mi (1,976.08 km) |
| Karhula to Gabrovo | 1,221.25 mi (1,965.42 km) |
| Karhula to Gorna Oryahovitsa | 1,202.10 mi (1,934.59 km) |
| Karhula to Gotse Delchev | 1,316.23 mi (2,118.26 km) |
| Karhula to Harmanli | 1,284.65 mi (2,067.44 km) |
| Karhula to Haskovo | 1,285.20 mi (2,068.33 km) |
| Karhula to Ihtiman | 1,255.92 mi (2,021.21 km) |
| Karhula to Isperih | 1,160.69 mi (1,867.95 km) |
| Karhula to Kardzhali | 1,305.17 mi (2,100.46 km) |
