I just added a new free feature. When you are in Explore mode and click on a campsite, the information on the bottom of the screen will show you the closest entry point or access point to that campsite. The time is based on your current route builder selections. It might take a couple of seconds to show up. If you click on the time, it will switch to Route mode and build the route.

I still might tweak this a bit. Try it out and let me know if you have any suggestions.