Thanks for the info Bike Chick. Sorry for the delayed reply--again! I live in northern Indiana, so it's pretty flat! I haven't ridden the Hilly Hundred and probably never will! We have hiked several times at Giant City Park and really enjoyed it. We've stopped in at the Lodge to check out the menu also!
I went to the webiste you recommended and printed out the map, but I can't really tell where the route is. We'll be in the area over Memorial weekend and plan on bringing our bikes, but I'm not sure what our plans are yet. My in-laws live in Olmsted, so we'll ride around there and possibly more.
We've had a pretty decent spring and have been riding quite a bit, so hopefully we'll be ready to tackle some hills! Thanks again for your help!