At the end of Coburn street, where it deadends, there’s a fire trail. I found it while tooling around town on my mountain bike looking for a trail to ride. Once on the trail after about 50 feet, veer left and up(down and right seems to take you back toward the streets again). I’m not sure how far the trail goes — I had to head back so didn’t have a chance to really explore it – but it looks like a nice trail to ride or hike. Good luck!