Since 2009, I have done hundreds of one-way walks through the countryside around Bristol, without driving. Some start from the city centre on foot and return by train or bus. Most use trains and/or buses in both directions. I am gradually recording them in the gpx files shown below. You can download these files into mapping apps such as Outdooractive, OS Maps or Komoot. If you don’t know how to do that then take a look at the video below.
This page is one of many listed on www.railwalks.co.uk
*Please note: when following a route walked by someone else, you must ensure your own safety. I try to avoid busy roads, but sometimes they are unavoidable. I also try to stay on legal rights of way, but I may sometimes deviate because the path was blocked or unclear, or I was trying to avoid a hazard such as bulls or cows with calves!
If you don’t know how to import a gpx file into a mapping app, it’s very easy, as explained in this video. It uses Outdooractive, a free mapping app, which you can download from the Google Playstore.