Picnic Loop is a hiking trail in Jefferson County, Colorado. It is within O'Fallon Park. It is 1.3 miles long and begins at 6,795 feet altitude. Traveling the entire trail is 1.2 miles with a total elevation gain of 611 feet. The MAP information is near the trailhead. There are also picnic sites, restrooms, and parkings. Along the trail there is a bbq.