The convention center is very close to what looks like some nice singletrack. Any Drupalers want to ride evenings after the conference?

Barton Creek Greenbelt is a few minutes away: http://www.austinbike.com/austin/74-bcgb

City Park is further away and would require a car: http://www.austinbike.com/austin/85-city-park

Bike rental: http://www.bartonspringsbikerental.com