I live near y-town and I think the trails you are talking about are on webb rd. I have some friends that go there but I never went as I prefer hillclimbing and trail maneuvering , they say it's nothing but a bunch of mud holes .
I can't remember any club passing out flyers , but if they were , they would have been meeting at "The Icehouse" bar . they have car shows and bike nights there and are located on the corner of webb rd and rt 46 .