Tom's Run Trail at Cook Forest State Park in Cooksburg, Pennsylvania is an easy 0.7 mile one-way hike along the Tom's Run River. The trail is flat and moderately trafficked since this is one of the more popular hikes in Cook Forest State Park. You can use this trail to connect to the Longfellow Trail to loop back to parking. The Longfellow Trail leads through the old growth forest called the 'Cathedral Forest'. If you're making a short stop at Cook Forest State Park, be sure to check out this trail and the Cathedral Forest.