3 Doors Down [ tickets ], who soon launch a spring headlining run, will top the bill of a multi-act summer outing that also will feature Staind [ tickets ], Breaking Benjamin [ tickets ] and a yet-to-be-named fourth act.

Though the itinerary has not yet been announced, the 44-city trek through indoor and outdoor venues will run July 1-Sept. 11. Tickets are expected to range from about $20-$25 for lawn seats to about $45 for reserved seating.

In addition to nailing down a fourth act for the tour's main-stage roster, organizers are also working on plans for a second stage, according to 3DD's agent, Ken Fermaglich of the Agency Group.

3DD is backing its latest album, "Seventeen Days," which surfaced in early February. The set--which features the cut "Let Me Go"--moved about 231,000 copies during its first week in stores, earning it a No. 1 debut on The Billboard 200 album chart.

The group launches its spring outing April 20 in Pensacola, FL, and dates run into late May. Details are included below.

Staind is gearing up for the summer release of its next album; a specific date has not been announced.

Breaking Benjamin continues to back last year's "We Are Not Alone," which debuted at No. 20 on The Billboard 200.