The range of the species is limited to North Spain, South-Central, Eastern and South-East Europe. In Bulgaria rare and mainly in the mountains up to 2100 m (Rhodopi: Karlak) (Buresch & Tuleschkow, 1930
: 176). Listed as vulnerable in Red Data Book of European butterflies (van Swaay & Warren, 1999
UTM map of the known distribution of Maculinea alcon in Bulgaria.