How many miles is the Kancamagus Highway? This question can be tricky and many online sources have it wrong. The Kancamagus Highway is also called Rt. 112, Rt. 112 itself is much longer.
The correct question is how long is the Kancamagus Scenic Byway. The Kancamagus Scenic Byway is 34-1/2 miles from beginning to end. Keep in mind this is the scenic part of the Kanc. The Scenic Byway has no businesses located along it, including gas stations, and is located within the White Mountain National Forest.