An hour, I wish all I had to do was drive an hour to get to a good rifle range. My drive is minimum 90 minute drive, and that's with speeding!
is a good place to start. That is a NSSF website, here is what I found (assuming the zip code I used was accurate)...
St. Joseph Sportsman Club, St. Jospeh IL 61873 [10.7]
Foosland Sportsman Club, Foosland IL 61845 [19.6]
Lake Fork Sportsman's Club, Atwood IL 61913 [22.7]