In reply to Pete Houghton:
I highly recommend beer and running for a pleasant day out.
I used to run the Real Ale Ramble each year from Llanwrtyd Wells, just for training whilst my wife walked the 25m, the organising pub is also a small brewery so he simply left barrels of real ale out (a couple of days before, to settle) in pretty scenic spots deep in the countryside. Initially I didn't drink till I got back to the pub, then I thought, "this is stupid, running is meant to be fun, so running + beer must be more fun". Man logic.
It worked fine, I took my mug, had a few beers on the way round each year and enjoyed the day even more. First 1/2 mile after a pint was a bit wobbly, but kind of pleasantly surreal, and then press on to the next pint!
http://www.green-events.co.uk/events.html?page=3&id=51
It is slightly more organised now, with barrels at manned checkpoints (the locals cottoned on to the free beer in the woods) and tokens in exchange for beer - but still a good day out if you fancy a 25 miles + beer in the Welsh countryside and there's runs on the Sat/Sun - so you get 50 miles of training in along with being hammered for 48 hours. No brainer.