Bel-Mar Country Club is an 18-hole private golf course in Belvidere, Illinois, built in 1919 and designed by Tom Bendelow. It sits in the $ (budget) price range for golf in Illinois. The season runs Apr 1 to Oct 31. Tee times can be booked 7 days in advance. Play is generally limited to members and their guests.
Details like fees and seasons change, so call the course before you head out.