Onyx Summit from Mentone

Onyx Summit from Mentone covers 55.7km and 2,164m of climbing, reaching 2,576m at the summit. Averaging 3.9%, the road kicks to 7.3% at its steepest — a notable steepening that demands respect. This is a climb of endurance — the kind of effort measured in hours, where pacing matters more than power. The summit at 2,576m sits above the treeline, where the air thins and the views extend to distant peaks. Located in California, United-states.