Sac River Trail features 8 miles of hiking trails near Springfield, MO.
From Springfield, take Highway 13 (Kansas Expressway) North out of town. You'll stay on 13 for about two miles; you'll pass a "Carpet Barn" (welcome to the Ozarks, folks) on your left. Keep heading on and suddenly, you'll see a propane dealership, also on your left. Turn left on that road and follow it down; parking lot will be on your right before you get to the plant.
http://www.tripleblaze.com/trail.php?c=3&i=463