The Detweiller Park course is where IHSA Cross Country State Meets are run over a 3-mile course over a broad, fairly flat field at Detweiller Park, north of Peoria, Illinois.
The course starts slightly downhill from the south edge of the park. The runners then make one nearly complete circuit of the field, ducking though some trees at the end of the lap into a separate field for about a half mile. Then the course turns back to the main field for another lap and half to the finish.
Every fall, the top harriers in the Land of Abraham Lincoln's Peoria speech converge on this fairly flat field located north of Peoria in fervent pursuit of treasured IHSA state championships. Both boys and girls in three enrollment classifications (Classes 1A, 2A and 3A) will compete for fall state titles on this three-mile course that ranks among the nation's best cross country courses.