A 30 km (19 miles) round trip, traversing parts of Cleveland National Forest (Descanso Ranger District) and Cuyamaca Rancho State Park and the Anza-Borrego Dessert State Park. It follows these trails and roads (starting at marker km23): - PCT (southbound, 7 km) - Noble Canyon Trail (westbound, 4 km) - Indian Creek Trail (westbound, 6 km) - East Mesa Fire Road (westbound, 3 km) - An unnamed trail crossing Harper Creek (northbound, 4 km) - Harper Fire Road (eastbound, 3 km) - Deer Park Road (southbound, 1 km) - Indian Creek Trail (eastbound, 3 km)