Bloomington Classic Professional Review and Guide
"This ride offers a delicious mix of small rural towns and scenic countryside northwest of Bloomington—much of it in the hilly landscape surrounding the Mackinaw River. The route also follows miles of long, straight, quiet farm roads that run by old farmhouses and barns. The first section of this ride takes you along Old Peoria Road, a local favorite among cyclists because of its rolling terrain and winding progression.
One of the highlights of this ride is the wooded hills and bluffs surrounding the Mackinaw River. At about 15 miles into the ride, north of Congerville, the hills begin to swell and multiply as you enter an area known as the Eureka Moraine. A moraine takes shape when an ice sheet advances at the same pace that it melts. As a result, the glacier acts as a conveyor belt, dropping off its load of rock, dirt, and debris—the stuff Rolling hills, some of them sizable, appear near the Mackinaw River on the Bloomington Challenge."