I used to do that every year until you changed the date. I've never been back since due to clashes and inconvenience (Sunday's never a good day with work the next day). It's a shame because I always enjoyed it so much, especially the tipple at the naughty corner.
I'd love to do that SNOD Trail Marathon. It looks to be 'right up my street'. If it wasn't only 5 days before the Lakeland 100 my name would be on the list. (Sadly it would probably provide a more appropriate build-up to UTMB as well.)
Last night I put my name on the list for the Three Peaks Fell Race now that it doesn't clash with The Fellsman for the first time in a long time. Fingers crossed that they let me in. They have quirky entry requirements, one of which is completion of a road marathon in under 3:20. Dream on, why don't you?