The highest points are the summits of Mount William at about 1,270 metres (4,170 ft)[1] AHD and Mount Dalrymple at 1,227 metres (4,026 ft)[2] AHD.

[3] The slopes of Clarke Range form the upper reaches of the Pioneer River valley.

[3] An exploration party led by John Mackay were the first Europeans to cross the range on 18 May 1860.

[3] The main road over the range winds sharply and steeply and is not suitable for caravans.

[4] Some 950 square kilometres (370 sq mi) of the Clarke Range, encompassing the Eungella National Park, has been classified as an Important Bird Area by BirdLife International because it supports most of the population of the Eungella honeyeater, an isolated northern population of the regent bowerbird, and large numbers of bush stone-curlews.