I love maps and like to research and plot out routes especially now that this might be the closest I can get to some decent walks for a bit. However for many of us the cost of software to do this is is off-putting.
I recently came across an interesting web site called Visorando that I think is worth looking at. Basically it allows you to plot a route, save it and print to a PDF file. You get information about the length of the route and height ascended etc. All useful. Best of all it is free and you can use OS maps. There are other maps available so that you can even plan your next holiday (or at least dream about it). You can also access routes added by other users and save yours for public use if you want. You have to register for access to all the features
The site is at https://www.visorando.co.uk/walk-planner.html.
Give it a try and let us know what you think in a Comment.