The Quick and Dirty:
Location: The turnoff for the trail is approximately 6 miles from O’Neil Park on Trabuco Canyon Road. Make a right turn onto a dirt parking lot onto Trabuco Creek Road and continue on Trabuco Creek Road for about 4.6 miles to the main parking lot for Holy Jim Falls. Tip: google maps will pull up the parking lot location if you search “Main Parking for Holy Jim Falls and Trail, Trabuco Creek Road, Corona, CA 92883.” 
Distance: 16 miles round trip to Santiago Peak, 2.8 miles to Holy Jim Falls
Terrain Type: High clearance vehicle is highly recommended to get to the trail head. Nice coverage for the first 1.4 miles to Holy Jim Falls, it is a continuous climb with lots of sun exposure for the remainder of the hike to Santiago Peak. There are no water sources after the Holy Jim Falls, 3L of water is suggested if you plan on doing the entire 16 mile hike. This is a dog friendly trail.
Difficulty:  Strenuous hike with more than 4,000 feet of elevation gain
Best Time: Year round but spring or after a rain event is the best time.
Duration: 6.5 hours, averaging 2 mph going to the peak and 3 mph coming down.

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