311 and Slightly Stoopid will co-headline this summer’s Unity Tour 2012. For the past decade, 311 have performed on the Unity Tour with a diverse range of musical acts, including Snoop Dogg, The Offspring, Sublime with Rome, Matisyahu, The Wailers and The Roots. This installment of the annual trek hits amphitheaters nationwide from July 8 to September 5. SOJA and The Aggrolites will split support duties. Tickets will go on sale March 27.

Here’s a look at this summer’s Unity Tour dates

7/8 Sioux Falls, SD—W.H. Lyons Fairground
7/10 St Louis, MO—Verizon Wireless Amphitheatre
7/12 Dallas, TX— Gexa Energy Pavilion
7/13 New Braunfels, TX—Whitewater Amphitheatre
7/15 Houston, TX—Cynthia Woods Mitchell Pavilion
7/17 West Palm Beach, FL—Cruzan Amphitheatre
7/18 TBA FL—tba
7/20 Tampa, FL—Ask Gary Amphitheatre
7/21 Atlanta, GA—Aarons Amphitheatre at Lakewood
7/22 Charlotte, NC—Verizon Wireless Amphitheatre
7/24 Virginia Beach, VA—Farm Bureau Live
7/25 Raleigh, NC—Time Warner Cable Music Pavilion
7/27 Philadelphia, PA—Festival Pier at Penn’s Landing
7/29 Bristow, VA (DC)—Jiffy Lube Live Amphitheatre
7/29 Gilford, NH—Meadowbrook U.S. Cellular Pavilion
7/31 Stroudsburg, PA—Sherman Theatre Summerstage
8/2 Holmdel, NJ—PNC Bank Art Center
8/3 Wantagh, NY—Jones Beach Amphitheatre
8/4 Boston, MA—Comcast Center
8/7 Pittsburgh, PA—Stage AE Outdoor Stage
8/8 Columbus, OH—Lifestyles Community Amphitheatre
8/9 Cincinnati, OH—Riverbend Music Center
8/12 Cleveland, OH—Jacobs Pavilion
8/14 Indianapolis, IN—The Lawn at White River State Park
8/15 Detroit, MI—DTE Energy Music Theatre
8/17 Chicago, IL—tba
8/18 Bonner Springs, KS—Summerdays Festival Sandstone Amphitheatre
8/19 Morrison, CO— Red Rocks Amphitheatre
8/22 Salt Lake City, UT—Usana Amphitheatre
8/24 Irvine, CA—Verizon Wireless Amphitheatre
8/25 San Diego, CA—Cricket Amphitheatre Chula Vista
8/28 Mesa, AZ—Mesa Amphitheatre
8/29 Santa Barbara, CA—Santa Barbara Bowl
8/31 San Francisco, CA—tba
9/1 Las Vegas, NV—The Beach at Mandalay Bay
9/4 Portland, OR—Sleep Country Amphitheatre
9/5 Seattle, WA—Marymoor Amphitheatre