In the midst of the group's wildly popular "Unstoppable" tour, Rascal Flatts [ tickets ] have added four new concerts to their summer and fall run of the US following a performance at Chicago's Wrigley Field.

The group, which recently became the first country act to perform at the legendary stadium, continues the road trip with a stop Friday (8/7) in Cuyahoga Falls, OH. Since last check, additional dates have been added in Fort Wayne, IN (9/18); Saint Paul, MN (9/19) and Fresno, CA (10/15), as well as a second night in Kelseyville, CA (10/17-18). The full itinerary is shown below.

"Unstoppable," the country sensations' sixth studio set, surfaced in April and debuted in the top spot of The Billboard 200. Rascal Flatts' own guitarist Dann Huff,produced the album, which currently sits at No. 8 on the magazine's Top Country Albums chart.

Last week, announced its participation in the iTunes Pass program, allowing fans who subscribe to the service exclusive weekly downloads, including concert recordings, studio rehearsals and lost demos. A total of 28 exclusive tracks will be released between now and Sept. 1, according to a press release. Rascal Flatts are the first country act to offer fans the iTunes Pass option.