Mastodon announce co-headlining tour with Opeth. Hitting Roseland Ballroom & Electric Factory.

Mastodon have announced an extensive North American co-headlining tour with Opeth. The pair will kick off their run in Portland, Maine on April 4th and wrap things up in Atlanta, Georgia on May 12th, but not before hitting Philadelphia's Electric Factory on April 9th and NYC's Roseland Ballroom on April 11th. All the dates, which will be supported by Ghost, can be found below. Tickets go on sale to the general public this Friday and Saturday.

Mastodon, Opeth 2012 tour

Apr. 04 - Portland, ME - State Theater

Apr. 05 - Boston, MA - Orpheum Theater 

Apr. 06 - Montreal, QC - Metropolis

Apr. 07 - Toronto, ON - Sony Centre

Apr. 09 - Philadelphia, PA - Electric Factory

Apr. 10 - Wallingford, CT - The Dome

Apr. 11 - New York, NY - Roseland Ballroom

Apr. 13 - Chicago, IL - Riviera Theatre

Apr. 14 - Grand Rapids, MI - The Intersection

Apr. 15 - Pittsburgh, PA - Stage AE

Apr. 16 - Knoxville, TN - TN Theater

Apr. 18 - Oklahoma City, OK - Diamond Ballroom

Apr. 19 - Dallas, TX - Palladium Ballroom

Apr. 20 - San Antonio, TX - Back Stage Live

Apr. 21 - Corpus Christi, TX - Concrete Street

Apr. 23 - Denver, CO - Fillmore Auditorium

Apr. 25 - Las Vegas, NV - House of Blues

Apr. 26 - Los Angeles, CA - Gibson Amphitheatre

Apr. 27 - Oakland, CA - Fox Theatre

Apr. 28 - Reno, NV - Grand Sierra Resort

Apr. 30 - Seattle, WA - The Paramount

May 01 - Vancouver, BC - Orpheum Theatre

May 03 - Edmonton, AB - Edmonton Events Center

May 04 - Calgary, AB - MacEwan Hall

May 05 - Saskatoon, SK - The Odeon

May 06 - Winnipeg, MB - Burton Cummings Theatre

May 09 - Washington, DC - The Fillmore

May 10 - Charlotte, NC - The Fillmore

May 11 - Myrtle Beach, SC - House of Blues

May 12 - Atlanta, GA - Masquerade Music Park