The upcoming tour is expected to put O.A.R in front of an estimated 263,000 fans in 26 markets across the country. O.A.R. have tapped Hawaii’s ska-rockers Pepper, and The Southland as openers. In addition to the headline tour, the band will once again join the Dave Matthews Band on select dates during the month of July.

O.A.R. will headline the fourth annual August 20 in Chicago. The festival has become a rite of passage for many emerging artists, including Maroon 5, Marc Broussard, and Howie Day.

O.A.R. has sold three quarters of a million albums and played to over 800,000 people since their humble beginnings in Chris Culos’s basement. In a time when the music-industry shied away from internet song swapping, O.A.R. embraced the practice with passion, encouraging fans to tape early shows and trade them online. As the practice grew, so did O.A.R. The band has released six albums, including major label debut, Between Now And Then.