Just returned from our vacation & noticed your post so hope it's not too late...
you could try calling a few of these for info and map trails. I myself ride a hybrid so do trails in area but I know a few riders who like to bike out to and around the area of High Cliff State Park.
Chain Reaction...920-733-1141
Recyclists...920-759-1200
Wheel & Sprocket...920-997-9300
Hope this helps & have fun
Last edited by 2travelers; 07-17-12 at 05:55 AM.