Northeast of Auburn and east of Colfax in the Tahoe National Forest, the Iowa Hill Loop is a 24 mile OHV trek along an old mining route. It winds along canyons and mountain-sides. It crosses a single-lane suspension bridge over the American River. Iowa Hill Road starts right from Colfax and heads east up into the forest. It connects with Sugar Pine Road.
Overall, Iowa Hill Loop is the 40th most popular OHV & 4wd jeep trail of all 102 OHV routes in California.