Marshal Canyon features 14 miles of hiking trails near Claremont, CA.
There is a parking lot at the top of Mills in Claremont. Park there and ride up further. You will see many people walking on a truck route. Follow that. At the first fork take a left and keep going up. Take a right at the second fork. continue going until you come to a gazeebo. that is the beginning of the trail. start heading down and you'll go through a few fences and when you reach the end you can eaither follow the rode back or park a vehicle at the elementary school in levern.
http://www.tripleblaze.com/trail.php?c=3&i=1780