Bonelli Trail

The climbing is back-loaded — the 1.8 miles stay comparatively easy before most of the 346 ft of gain arrives late. The main climb starts around mile 1.1 and runs 0.45 miles, gaining 261 ft at an average 11%. The steepest sustained pitch averages 15% and begins just past mile 0.89. You finish 88 ft below the start, so an out-and-back saves the climbing for the return.

At 1.9 miles it is longer than 86% of the 66 trails mapped in Walnut.

It climbs more per mile than 79% of trails in Walnut.