That's assuming you don't run into traffic. Did it route you along 1604 to I-35? Problem with The Oasis' location is it is off of 620 in far West Austin, and 620 is notorious for bad traffic. Great place once you get there, though - views are spectacular from the main building.
2013 F30 335i M-Sport 8AT/MPE/MPPK, 2011 128i M-sport Cabrio 6MT/PE