CHICAGO -- Houston, San Francisco and South Florida are bidding for the 2016 and 2017 Super Bowls.

NFL owners will vote next May between San Francisco -- the 49ers are building a new stadium in Santa Clara, Calif., -- and South Florida for the 50th Super Bowl in 2016. The loser of that race will then compete with Houston for hosting the 2017 game.

Several owners have said a return to SunLife Stadium in Miami would require major upgrades to the building, and commissioner Roger Goodell says Tuesday that the Dolphins "feel that (renovations) are a large part of their bid."

South Florida has hosted the most Super Bowls, 10, the last in 2010. Houston has done two, the most recent in 2004.