| Koyulhisar to Devnya | 565.47 mi (910.04 km) |
| Koyulhisar to Dimitrovgrad | 646.77 mi (1,040.88 km) |
| Koyulhisar to Dobrich | 560.60 mi (902.19 km) |
| Koyulhisar to Dospat | 718.01 mi (1,155.52 km) |
| Koyulhisar to Dupnitsa | 774.72 mi (1,246.80 km) |
| Koyulhisar to Elhovo | 598.73 mi (963.57 km) |
| Koyulhisar to Etropole | 735.03 mi (1,182.92 km) |
| Koyulhisar to Gabrovo | 668.94 mi (1,076.55 km) |
| Koyulhisar to Gorna Oryahovitsa | 654.71 mi (1,053.65 km) |
| Koyulhisar to Gotse Delchev | 740.12 mi (1,191.11 km) |
| Koyulhisar to Harmanli | 630.56 mi (1,014.78 km) |
| Koyulhisar to Haskovo | 647.59 mi (1,042.20 km) |
| Koyulhisar to Ihtiman | 740.51 mi (1,191.74 km) |
| Koyulhisar to Isperih | 611.18 mi (983.59 km) |
| Koyulhisar to Kardzhali | 656.16 mi (1,056.00 km) |
