The club is called "ausible river riders".. go to "ausibleriverriders.ca" and you can get an idea of what they offer.. If I had to guess, I'd say there's approx 60 to 80 kms of trails between two trail system's they operate.. Both trail heads start in parkhill, but they'd have my ass if I posted the specific start points.. You'll see that I posted earlier that I saw lots of riders last year without a pass on the trails, but if you go to the webste you'll also see that this year, they've put some focus on cracking down on riders without a pass.. You can of course get a day or weekend pass if you just wanted to try them out.. I'm always just happy to see another machine on the trails, so it personally doesn't bother me to see a guy out there without a pass as long as he's not tearing the trails apart or causing ruts that cost money to repair.. The pass is $175 and if you work two 3hr trail maintenance days you get $50 back.. Its worth checking out if the drive isn't to much of a hassle for you..