My speedometer is broken so I couldn't accurately measure the trail. It sounds short but it is a technical ride and worth it to take a try. Acorn Park is a 25 acre park located off of McGee Road, most of this park is a natural area having been untouched for over 100 years. Hiking, equestrian, and mountain bike trails traverse most of this park allowing park users to access all areas of the park. The entrance area of the park provides a deck hockey area, a unique playground, and picnic tables.
Acorn park
http://www.singletracks.com/item.php?c=1&i=6574