Fox River Trail (Illinois)

The Fox River Trail is a multi-use path in Illinois along the Fox River. Largely in Kane County, the trail connects the communities of (North to South) Algonquin, Carpentersville, Dundee, Elgin, South Elgin, St. Charles, Geneva, Batavia, North Aurora, Aurora, Montgomery, and Oswego.

The trail begins at the McHenry County line in Algonquin and runs south just over 38 miles (61.2 kilometres) to Oswego in Kendall County. A 1 mile (1.6 kilometres) gap in Aurora was closed in 2016 by a new protected bike lane. From St. Charles south most of the route is next to Illinois Route 25 on the east side of the river or Route 31 on the west side. The trail crosses the river in several places and between Batavia and North Aurora the trail splits and runs parallel along both sides.

Some of the trail is dedicated-use on the former right of way of the A.,E.&F.R.E.Co. interurban railroad and the C.&N.W.Ry. railroad, but some has been purpose-built along the riverbanks. Using the railroad right of ways allows long sections with little grade change and wide curves, while the purpose-built sections can be closer to the river. Dedicated-use sections are asphalt paved. Limited portions require a user to travel across intersections or directly on public streets.

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