This route starts at Hagley train station and finishes at Barnt Green station. You can get a direct train from either Moor Street, if starting in coming from the city centre or Yardley Wood if starting in Kings Heath. You can get back from Barnt Green by getting a train to either New Street or Bournville. Alternatively you can ride back to Kings Heath by linking up with one of the sections of the Alvechurch Loop.
You can also view this on an OS map via Get A Map. If you take a look at this version, click “Leisure” in the top left corner of the map to get the view you are after.