Metra also stops at ORD with their Metra North Central Service, instead of taking the el.

If the River Grove or other station on this line is a short cab for you, perhaps catch a cab to one of these mid-stations (rather than going downtown,then back out) and then take the train to the ORD stop.

Edited to add link to a thread on Chicagoland public transportation including Metra link. http://flyertalk.com/forum/showthrea...transportation