D.N.
check out the Dupage Forest Preserve www.dupageforest.com
Under recreation and then bicycles, you can check out if any of the trails are good for you. There is one shown as Darien (Waterfall Glen I think). I am in Cook Cty and my kids love going for walks or rides on the trails. The only problem is there are some rude people that think they own the trails--just like people on some sidewalks. If youare a stay at home mom, I ould suggest using trails midmorning to early afternoon so you don't get those people in the before and after work crowd.