Barton Creek Greenbelt is one of Austin's standout hiking destinations, winding through TX's diverse terrain. The trail covers 12.0 miles with 800 feet of elevation change, making it a moderate outing suitable for most trail users. Trail stats: 12.0 miles, 800ft elevation gain, Moderate difficulty. Surface: Rocky. Trail type: Out-and-Back. Estimated time: 5-6 hours. Fee: Free. Dogs: Yes, on leash. Permit: No. Wildlife in the area includes deer, turtles, herons. Keep your eyes open and maintain a respectful distance from any animals you encounter. Best seasons: Year-round; swimming holes in summer are crowded but fun. Recommended gear: sturdy trail shoes, 2+ liters of water, sunscreen, and a trail map. In summer, an early start beats the heat on this exposed TX trail. Practice Leave No Trace: pack out all waste, stay on the marked trail, and leave rocks and plants undisturbed.