Quick question re Wasdale training and the race itself.

I'm coming off a decent spring running Coledale, Waltz and Butteremere with some top 20 finishes so the legs have had a solid working over, haha

How many and what distance are peoples long runs for Wasdale? I've done a good few marathons in the past but haven't run a long long lakes race yet (Langdale the longest so far) I've got a couple 16s, an 18, a 19 bagged with regular midweek runs around the 10-13m region so far. Planning on a couple more 18-20s.

Also how much fuel/water do people carry too? I'm looking at the inov8 3L waist bag with 5ooml bottle. I guess a fistful of gels too and couple mini mars bars thrown in, lol

Any tips greatly appreciated :-)