A 75-acre hike/bike trail located between Princeton and Farmersville, adjacent to Lake Lavon. The primitive trail is open for day use only for hiking and off-road bicycling. The trail is closed when wet. Ground fires and hunting are not permitted. Restrooms, pavillion and picnic tables are now available. The park trails are maintained by the Dallas Off Road Bike Association (DORBA).

Sister Grove Park is open for day use only from sunrise to sundown.