Excellent trails.
From Topeka take US 24 Hwy east 17 miles to Perry. Turn left on Ferguson Road north of Perry for about 2 miles. Turn left at 39th Street (Spillway Road) and travel about 1 mile, then turn right on Perry Park Drive. The brick building on the right is the U.S. Army Corps of Engineers information center.
http://www.tripleblaze.com/trail.php?c=3&i=6987