Fox River Trail (IL) Coming from Crystal Lake..? By erikafreeman in 6/25/2011 12:59:30 PM | I'm originally from Crystal lake and I remember when I was in high school (early 90's) a patch of rails was turned into a biking trail and I remember riding it to Algonquin. Is this the same trail or is the trail to CL a spur of the Fox River Trail??