Do you think Illinois is all flat cornfields? Wise ultra-runners will get some serious hill training in before coming to McNaughton Park! We don.t have mountains in Illinois ... just a few rolling hills with elevator shaft downhills guaranteed to warm your quads on a chilly April evening. Here's how one satisfied customer described the terrain: 'I now know why Illinois is so flat. They took all the hills that are supposed to be there and put them ALL into one spot in Pekin, IL ... and called it 'McNaughton Park'."