Is it really that hard to find Northern IL and mid to southern WI trail maps?

So. Trying to find trail maps for the areas in question. I've found a couple, but no real good maps or web sites. It can't be that hard to find trail maps, can it?

I'm not looking for hundreds of miles, just some decent trails. So where in these areas are good for riding? I'm thinking of going to mid WI for a weekend.

Thanks.

Is it really that hard to find Northern IL and mid to southern WI trail maps?