I've never done route planning always used someone's im guessing there a way of put multiple gr's on a online map and them making a route ? I.e winter event

For me I put all the GR's into here to get the shape
https://gridreferencefinder.com/

At a high level you can then work out in which order you may want to visit them, Clockwise/Anti. Certain ones will naturally link up.


Now either get out your OS maps or use bikehike to start to plot a route linking them together (Mug of Tea and hobnobs are compulsory)
Now cross reference your route with the satellite images to see if whats on the map, exists on the ground. You may also notice something thats on the ground thats not on the maps. Bonus

Remember you may want to detour for Pubs/Cafes/Shops and you may not want to visit all of the GR's if you have a distance in mind. 100km should be plenty. Also check the amount of elevation. If its over 25 meters per km, you may want to rethink.

Can take a couple of attempts to get something, but practice makes things better

Thanks chew I'll have a play with it later