Isaberg, Nature reserve in Gislaved Municipality, Sweden

Isaberg is a 160-metre-high hill of ancient bedrock by the Nissastigen road near Hestra and Lake Algustorpasjön. Since 1968 it has been a 149-hectare nature reserve of mainly coniferous forest with marked trails and hiking paths. Its ski area has slopes reaching 309 metres above sea level, the longest run 950 metres, and a six-seat chairlift installed in 2004.

Isaberg was designated a nature reserve in 1968 to support outdoor recreation. Its first slalom slope, financed by the Göteborg–Borås–Alvesta Railway Company, opened for the winter of 1936–1937, making it one of Sweden's earliest. The first ski lift followed only in 1968, and a six-seat chairlift was added in 2004.

Isaberg's name comes from the mountain itself, and the ski area grew out of the Göteborg–Borås–Alvesta railway company's funding, which let Isabergs Turistförening open a slalom slope for the winter of 1936–1937. The first lift only arrived in 1968, the same year the nature reserve was established. Today the slopes are graded with Swedish colour names, from the black Slalombacken to the green children's runs.

The marked trails and hiking paths run through the 149-hectare reserve, whose terrain rises 160 metres above the surrounding land. The ski system reaches 309 metres above sea level, and the longest descent is 950 metres. From Gothenburg, the drive or bus ride takes about two hours, which makes the area a common destination for schools in that region.

The first slalom slope was built by Isabergs Turistförening with funding from the Göteborg–Borås–Alvesta railway company and was ready for the winter of 1936–1937, making it one of Sweden's first. The first lift only arrived in 1968, the same year the 149-hectare nature reserve was established.