Fans of adult contemporary rock have a blockbuster tour on the horizon.

Maroon 5 and the Counting Crows are teaming for a marathon summer/fall tour of amphitheaters through the United States. The trek will kick off July 25 at the Verizon Wireless Virginia Beach Amphitheater in Virginia Beach, Virginia, and conclude October 4 at the Cruzan Amphitheatre in West Palm Beach, Florida.

Sara Bareilles has been tapped as the opener through August 26, while Augustana will be the opening act on the rest of the dates.

Tickets go on sale through Ticketmaster and Live Nation on April 4. The bands are working with environmental nonprofit Reverb to help make the tour eco-friendly with biodiesel trucks, carbon offsets, and carpool groups for concertgoers.

Maroon 5 continues to hit the road in support of its May 2007 album, It Won't Be Soon Before Long, which has sold more than 1.6 million copies in the US and more than 3 million worldwide. The band will also appear April 9 on the American Idol special Idol Gives Back.

Meanwhile, The Counting Crows' Saturday Nights & Sunday Morning, a double CD and their first studio album since 2002, hits stores today.

Maroon 5 and Counting Crows tour dates:

7/25 - Verizon Wireless Virginia Beach Amphitheater - Virginia Beach, VA*

7/26 - Toyota Pavilion at Montage Mountain - Scranton, PA*

7/28 - Verizon Wireless Amphitheatre Charlotte - Charlotte, NC*

7/29 - Time Warner Cable Music Pavilion at Walnut Creek - Raleigh, NC*

7/31 - Nikon at Jones Beach Theater - Wantagh, NY*

8/2 - Tweeter Center for the Performing Arts - Boston, MA*

8/5 - Hersheypark Stadium & Star Pavilion - Hershey, PA*

8/7 - PNC Bank Arts Center - Holmdel, NJ*

8/9 - Susquehanna Bank Center - Camden, NJ*

8/12 - Saratoga Performing Arts Center - Saratoga Springs, NY*

8/13 - Bethel Woods Center for The Arts - Bethel, NY*

8/15 - New England Dodge Music Center - Hartford, CT*

8/16 - Nissan Pavilion - Washington, DC*

8/18 - Darien Lake Performing Arts Center - Buffalo, NY*

8/19 - Molson Amphitheatre - Toronto, ON*

8/21 - Post-Gazette Pavilion - Pittsburgh, PA*

8/22 - First Midwest Bank Amphitheatre - Chicago, IL*

8/23 - Marcus Amphitheater - Milwaukee, WI*

8/26 - Blossom Music Center - Cleveland, OH*

8/28 - Verizon Wireless Music Center Indianapolis - Indianapolis, IN+

8/29 - DTE Energy Music Theatre - Detroit, MI+

8/30 - Riverbend Music Center - Cincinnati, OH+

9/5 - Cynthia Woods Mitchell Pavilion - Houston, TX+

9/6 - Superpages.com Center - Dallas, TX+

9/9 - Journal Pavilion - Albuquerque, NM+

9/10 - Cricket Wireless Pavilion - Phoenix, AZ+

9/12 - Verizon Wireless Amphitheater - Irvine, CA+

9/13 - Coors Amphitheatre - San Diego, CA+

9/17 - Shoreline Amphitheatre at Mountain View - Mountain View, CA+

9/18 - Sleep Train Pavilion - Concord, CA+

9/20 - Amphitheater at Clark County - Ridgefield, WA+

9/21 - White River Amphitheatre - Seattle, WA+

9/24 - Coors Amphitheatre at Fiddler's Green - Denver, CO+

9/26 - Starlight Theatre - Kansas City, MO+

9/27 - Verizon Wireless Amphitheater St. Louis - St. Louis, MO+

9/30 - Verizon Wireless Music Center Birmingham - Birmingham, AL+

10/1 - Lakewood Amphitheatre - Atlanta, GA+

10/3 - Ford Amphitheatre - Tampa, FL+

10/4 - Cruzan Amphitheatre - West Palm Beach, FL+

* lineup includes Sara Bareilles
+lineup includes Augustana