Lostprophets [ tickets ] continue to support their sophomore album during a summer tour that also features the group's Columbia Records labelmates Midtown [ tickets ].

The two groups are set to launch the run in Washington, DC, on July 15, and dates are lined up through early August. Details are shown below.

Also on tap for Lostprophets is a July 21 performance at Hard Rock Live in Orlando, which MTV plans to tape for a future airing. Tickets for that event hit the box office on Friday (6/25), according to promoters.

Lostprophets are on the road behind their February release, "Start Something." The set debuted at No. 33 on The Billboard 200 album chart, and its lead-off single, "Last Train Home" hit No. 1 on Billboard's Modern Rock Tracks chart.

The album, which also features latest single "Wake Up (Make a Move)," was recently certified gold for shipping 500,000 copies in the U.S.

Midtown issues a new album titled "Forget What You Know" on June 29.