Hello Mappers I do a lot of walking in the English countryside. Sometimes I plan routes and find these two “engines” very useful.  GraphHopper https://www.graphhopper.com/    and OSRM https://openrouteservice.org/  These two routing engines are on the main map page and use openstreetmap data. Try them out, click on the bent arrow and select a couple of points, select mode of travel. for example  osm.org/directions?engine=graphhopper_foot&route=52.3099%2C-0.3175%3B52.2873%2C-0.3173 move the point a little and you have osm.org/directions?engine=graphhopper_foot&route=52.3100%2C-0.3158%3B52.2873%2C-0.3173 You now have a route, a distance and elevation trace of almost the whole circuit  of Grafham Water Reservoir.    Sometimes two points will generate an odd route. My next diary entry will cover some of the problems and how to fix them.                                Happy Mapping and Route Planning Andy