Ontario Peak, Bighorn Peak, Timber Mountain, Telegraph Peak and Thunder Mountain Knot

The Ontario Peak, Bighorn Peak, Timber Mountain, Telegraph Peak and Thunder Mountain Knot is a 30.6 km trail that starts in Mount Baldy, San Bernardino County, California. Based on our data, the hike is graded as Extra Difficult. For information on how we grade trails, please read measuring the difficulty of a hiking trail on hiiker. Also, check our latest community posts for trail updates. This hike can be completed in approx 2 days. Caution is advised on trail times as this depends on multiple variables. For more info read about how we calculate hike time.