I'm in Peoria too. Lemme know if you ever wanna cruise.
For roads, I'm always lookin too, mostly for my bike though. Farmdale Rd to Veterans Rd from East Peoria to Morton is decent. Usually no traffic, and never seen a cop until pretty close to Morton. It's not long, but it's somethin. Bittersweet branches off from that and looks curvy on the map, but I've never run it.
Taking 29 up the river and then 26 back down was a decent cruise, but not super exciting. If you have a GPS there's a few curvy roads along 26.
I read recently that there's some good roads near Mossville, but I haven't had a chance to check them out yet. I usually keep the exploring to the bike, and it's getting chilly out...