After wrapping a series of spring concerts across the U.S., rock-reggae crew 311 will launch its annual Summer Unity Tour with support from reggae artist Ziggy Marley and an unnamed special guest.

The 25-city jaunt kicks off with a June 5 show at Santa Barbara Bowl in Santa Barbara, CA, and closes out July 12 at Verizon Wireless Amphitheater in Irvine, CA. During the coast-to-coast circuit, the group will complete a June 12 concert at Red Rocks Amphitheatre in Morrison, CO, a June 25 performance in Central Park in New York, NY, and a July 4 show at Lakewood Amphitheatre in Atlanta, GA, among other dates.

Presales for the summer amphitheater tour will open in select markets on March 23, with public on-sales following a few days later. Date-specific on-sale dates can be found on the official 311 Web site.

The band has also announced a release date for its ninth studio album, “Uplifter.” The effort is slated to hit U.S. stores on June 2, preceded by the mid-April radio debut of the first single, “Hey You.” In addition to the regular record, a deluxe version will be released, featuring an additional 80-minute DVD documentary.

TFL and ATBS for ticketing professionals

This is the fourth year for 311’s genre-combining Summer Unity Tour, which was founded in 2006. The inaugural event visited comprised nearly 40 concerts and included sets from Pepper and legendary reggae group The Wailers. Last year’s event featured Snoop Dogg and special guest Fiction Plane.

The tour season launches for 311 with a nearly 20-city run of the U.S., which is scheduled to begin April 15 at Rialto Theatre in Tucson, AZ, and end May 15 at Shrine Mosque in Springfield, MO.

Summer Unity Tour itinerary:
(Dates are subject to change.)

June 5 Santa Barbara, CA Santa Barbara Bowl
June 7 Eugene, OR Cuthbert Amphitheater
June 8 Seattle, WA WaMu Theater
June 11 Salt Lake City, UT Usana Amphitheatre
June 12 Morrison, CO Red Rocks Amphitheatre
June 14 Chicago, IL Charter One Pavilion
June 16 Cleveland, OH Time Warner Cable Amphitheater
June 17 Columbus, OH Lifestyle Communities Pavilion
June 19 Sterling Heights, MI Freedom Hill Amphitheatre
June 20 Cincinnati, OH Riverbend Music Center
June 21 Indianapolis, IN White River State Park
June 23 Saratoga Springs, NY Saratoga PAC
June 24 Mansfield, MA Comcast Center
June 25 New York, NY Central Park
June 27 Holmdel, NJ PNC Bank Arts Center
June 28 Bristow, VA Nissan Pavilion At Stone Ridge
June 30 Philadelphia, PA Festival Pier
July 1 Virginia Beach, VA Verizon Wireless Virginia Beach Amphitheater
July 3 Charlotte, NC Verizon Wireless Amphitheatre
July 4 Atlanta, GA Lakewood Amphitheatre
July 5 Raleigh, NC Time Warner Cable Music Pavilion
July 7 Maryland Heights, MO Verizon Wireless Amphitheater St. Louis
July 10 Phoenix, AZ Dodge Theatre
July 11 Chula Vista, CA Cricket Wireless Amphitheatre
July 12 Irvine, CA Verizon Wireless Amphitheater