I can't recommend drinking a beer on a walk, but after a hard day's walking I can't think of a better reward that a pint of Lake District ale in one of the Keswick pubs.
The second best option is to take that taste of the Lakes home with us, and during a recent stop off in Glenridding I picked up on a few choice ales that don't have many stockists.
In particular the Ulls-Water is a custom-labelled beer from the Keswick Brewing Company that is only available in Glenridding.
The Ulls-Water is actually Thirst Ascent in disguise, but I do like those custom beer labels. I'm really waiting for a special occasion to crack these beers open, although having said that, I might have the odd one or two in the meantime, be a shame not to - Cheers!