Sport center "Bistritsa" in Borovets is one of the largest terrains for cross-country ski and biathlon in Bulgaria.  There are 10 km. trails in the ski center, perfectly suitable for beginners and professional competitors. 

You can rent cross-country gear from "Gondola Ski Rentals" - the "Borosport" ski rental located inside the building of Gondola lift lower station. You can also take cross-country class with the professional teachers from "Borosport" ski school.  Preliminary booking is required at email  ski_school@borovets-bg.com