Brian,
From Harvard get to Rt. 20 to Rockford, then take I-39 south to Rt. 64. Go east on 64 until you get to Oregon. Go through most of town until you get to 10th street, then turn left (south). After about 4 or 5 blocks you will see a park on the right, which is behind M&M grocery store. Park in this lot and you are at the trail head.
This is a long address, but if you cut and paste the whole thing it should give you a map of Oregon.
http://maps.yahoo.com/py/maps.py?BFCat=&Pyt=Tmap&newFL=Use+Address+Below&addr=608+s+10th+&csz=Oregon%2C+il&country=us&Get%A0Map=Get+Map
About a trail map: Our club treasurer (Gary) lives right at the trail head, and his garage opens on the trail. If he is home you should be able to get a map from him. I won't post it here, but you can find his phone number on our web site (see address below). Also, during business hours you can get a map at State Farm Insurance in Oregon (810 S. 13th St, Oregon). I think they are there 9-5 during the week, and 9-12 on Saturday. If you know when you are going to be here let me know and I might go riding with you, or could meet you and get you a map.
We should soon have a printable trail map on our web site at:
www.snowblazers.50megs.com
Have Fun!
Lee