Old Number 9 Trail is a hiking and biking trail in Boerne, Texas. It is 1.5 miles long and begins at 1,383 feet altitude. Traveling the entire trail is 0.0 miles with a total elevation gain of one foot. The Old Number 9 Trail Esser Road Trailhead parking is near the trailhead. There is also parking. Along the trail there are a shelter and drinking water.