Main Trail Loop 3 is a hiking trail in DuPage County, Illinois. It is within Morton Arboretum. It is 1.1 miles long and begins at 730 feet altitude. Traveling the entire trail is 2.2 miles with a total elevation gain of 173 feet. Near the trailhead there is parking. P7 and other parkings and the Big Rock Visitor Center information can be seen along the trail. There are also restrooms along the trail.
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