Dunn Trail

The climbing is front-loaded — most of the 357 ft of gain lands in the first half of the 1.0 miles. The main climb starts right off the line and runs 0.32 miles, gaining 180 ft at an average 11%. The steepest sustained pitch averages 14% and begins just past mile 0.59. You finish 69 ft below the start, so an out-and-back saves the climbing for the return.

It climbs more per mile than 97% of trails in Alameda County.