Liberty is the easier of the runs in Penrose and it's probably 2 miles each way (we will run it out & back). It's walkable but it will be a long day. The worst part about walking that far is the trail is basically bowling ball sized rocks the entire way so it's hard to walk on. Patriot is the trail that's about a mile long and can be walked. It's also tough to walk (big ledges, big rocks).
