The Riddler, at 11,560 feet (3,520 m) above sea level is the third highest peak in the Lemhi Range of Idaho. The peak is located in Butte County on the border of Caribou-Targhee National Forest and Salmon-Challis National Forest. Diamond Peak is 1.1 mi (1.8 km) north of the peak and Big Boy Peak is 0.7 mi (1.1 km) to the southeast. It is the 41st highest peak in Idaho.