The TopoBulgaria project is an online topographic and tourist map of Bulgaria. At present, including layers (still working and unfinished) with huts, campsites and bivouac places in the country, colored tourist marking, names of basic topographic formations (mountains, plateaus, hills, etc.), major tourist attractions as 100 NTOs, monasteries, etc.
When you zoom out above 11, you can see the distance in hours between certain points (chalets, branches, exit points) in some of the mountains

In map are connected this projects: