Where will you be staying and how much work do you want to do? The Barton Creek Greenbelt is right in the middle of town and is close to Bicycle Sports Shop’s main shop that has rentals of a full range of bikes from hard tails to full carbon squishies. They are not cheap but have a good selection. I’d try and reserve one early to ensure you get what you want. The BCGB is not a beginner trail and there is a ton of branches where you can actually enjoy yourself instead of dealing with hikers. This may be limited with the time of year but it’s a well used trail. The hike and bike trial around Town Lake / Lady Bird Lake is crowded, flat, and a target rich environment on weekends. It’s also close to great watering holes and restaurants so you can sightsee as you ride between bars. You can also go up the trail along shoal creek. South of town you have a trail system of 70 miles of mostly flat trails with a few hills and decent flow. There are several posters who live in the area, myself included. Slaughter Creek Trail is easy and self contained. North you have Walnut Creek which is a self contained 12 mile circuit around a park. Northwest, you have Brushy Creek which is a large system with some one of the more technical trails (Deception) around. West there are several parks (Pace Bend and Horseshoe Bend) and Reimer’s Ranch that offer good trails. I’m old and still ride a hard tail so stick to flow, twist and don’t like big step-ups. Feel free to post here or PM me if you have other questions. Sent from my iPhone using Tapatalk