I fly into Midway on Southwest Airlines all the time. I think the longest runway is 6100 feet. I pray EVERY time the plane I am on is on approach to Midway.
LaGuardia in NYC is bad too - the end of the runway is in the water. I remember being on an L1011 coming into LaG, and I thought it was an awfully big plane to be going into LaG. SO I asked the stewardess, "can a plane this big land at LaGuradia". Her response - "I think so". real comforting.
Makes Laguardia's runways look lengthy. LaGuardia had a number of runway mishaps about 10 years ago, so the Port Authority built a 700 foot platform over the water and its been fine since. Something about a margin of safety.