The Kestrel and the Monarch trails circle the Big Run Area.

Kestrel Trail – 1.3 miles
Easy – Hike – Pets – Grass and Dirt
Runs through wetlands and joins the Monarch Trail.

Monarch Trail – 1.4 miles
Easy – Hike – Bike – Pets – Paved
Runs alongside Walnut Creek and connects with the Sweetgum Trail.

The AllTrails website has a description with a map of a loop hike on these trails.

Walnut Woods features 1,098 acres of woodlands and fields, bordered by Walnut Creek to the north. The Tall Pines Area features dramatic stands of pines and sweetgum trees, and the Buckeye Area has long rows of old nursery trees such as serviceberry, crab apple and red maples. The park also features restored wetlands and vernal pools.