Iowa Route 14 is a north-south highway in the eastern part of central Iowa. It spans most of Iowa's north-south distance, running from Corydon in the south to Charles City in the north. The southern end in Corydon is at Iowa Route 2. The northern end in Charles City is an interchange with the Avenue of the Saints, carrying US Route 18, US Route 218, and Iowa Route 27. Between those endpoints, Iowa Route 14 passes through Chariton, Knoxville, Monroe, Newton, Marshalltown, and Allison.