Randall Road is a major north-south county highway in McHenry and Kane County, Illinois. The road is named after Norman Randall, a prominent area landowner in the 1930s. It serves as the western extent of the Fox Valley suburbs in the Chicago metropolitan area. Its southern terminus is in Aurora, Illinois, at Marseillaise Place. Its northern terminus is at a full four way intersection at McHenry Avenue and James R. Rakow Road in Crystal Lake, Illinois. The road is 31.4 mi (50.5 km) in length.

Towns served

Randall Road runs through sections of the following towns from north to south: Crystal Lake, Lake in the Hills, Algonquin, Carpentersville, West Dundee, Sleepy Hollow, Elgin, South Elgin, St. Charles, Geneva, Batavia, North Aurora, and Aurora.

Multilane artery

The road is four lanes for the majority of its length, except for two small sections. The road is six lanes wide for a mile-long stretch in Algonquin (between Corporate Parkway and Harnish Drive), to accommodate traffic generated by the large outdoor malls Algonquin Commons and the Algonquin Galleria and power center Oakridge Court. The road was also widened to six lanes in small stretches in Elgin south of I-90, to accommodate traffic generated by Sherman Hospital. Randall Road narrows to two lanes south of Oak Street in North Aurora. A busy north-south artery, traffic counts average between 39,000 and 47,000 vehicles per day in the corridor from South Elgin to Lake in the Hills, between 28,000 and 39,000 vehicles per day in the Crystal Lake area and in the corridor from South Elgin to Batavia, with lighter volumes (12,000 to 17,000 vehicles per day) in the North Aurora and Aurora areas.