Several things wrong with this route. First, there are absolutely NO trail markings or signs (not even cairns). Good luck finding the start of the Schallenberger singletrack. We wound up heading along Cold Stream Canyon towards Donner Memorial State Park until we ran into Private Property/No Trespassing signs. Looped around and thought we were back onto Schallenberger, but wound-up having to bushwhack and climb down rock fields to find the trail again. NOTE: My AllTrails app started behaving badly at that point...showing our GPS location in the wrong spot and never moving. Can't blame the phone since other GPS apps and compass showed correctly. Would never recommend this trail to anyone, not even an enemy.