L-8 North Tieback is a hiking, biking, and horse trail in Palm Beach County and Martin County, Florida. It is within Dupuis Reserve. It is 4.7 miles long and begins at 24 feet altitude. Traveling the entire trail is 9.5 miles with a total elevation gain of 37 feet. The S-76 spillway and the L-8 dike can be seen along the trail.