We didn't think four dates would be enough, and today (April 25), Black Sabbath confirmed what we had been thinking all along. The band has announced a five-week tour of North America in support of its upcoming album, '13.' The full list of shows can be found below.

Sabbath will kick off their 20-date tour on July 25 in Houston, Texas. The band will works its way across the continent - including shows in Toronto and Vancouver - before winding up in Los Angeles on Sept. 3. Currently Black Sabbath are touring Australia through May 7, after which they will play Ozzfest Japan on May 12.

Tickets for the 16 dates announced today will go on sale Friday, May 3 at Ticketmaster. Fans can also visit a special Facebook page to register for pre-sale, which will take place May 2. VIP packages can also be purchased at VIP Nation.

'13,' the first Ozzy Osbourne-fronted Black Sabbath album since 1978, will be out on June 11. The first single, 'God is Dead?,' has already been released.

Black Sabbath 2013 Summer Tour Dates

7/25 - Houston, Texas
7/27 - Austin, Texas
7/29 - Tampa, Fla.
7/31 - W. Palm Beach, Fla.
8/2 - Bristow, Va.
8/4 - Holmdel, N.J.
8/6 - Detroit, Mich.
8/8 - Uncasville, Ct.
8/10 - Philadelphia, Pa.
8/12 - Boston, Mass.
8/14 - Toronto, Ont.
8/16 - Tinley Park, Ill.
8/18 - Indianapolis, Ind.
8/22 - Vancouver, B. C.
8/24 - Seattle, Wash.
8/26 - San Francisco, Calif.
8/28 - Irvine, Calif.
8/30 - Phoenix, Ariz.
9/1 - Las Vegas, Nev.
9/3 - Los Angeles, Calif.

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