Crosby, Stills & Nash continue to push the limits on their fast-approaching summer tour of North America. In yet another revision to their itinerary, the folk rock trio has padded the summer-long tour with 22 additional performances.

As previously announced, the CSN tour is split into two summer legs, with the first beginning June 3 at Chaifetz Arena in St. Louis, MO, and ending June 14 at the Bank of American Pavilion in Boston, MA. The additional dates have been added to the second leg, which now picks up July 25 at Merrill Auditorium at City Hall in Portland, OR, and concludes September 28-29 at Humphrey's Concerts by the Bay in San Diego, CA.

David Crosby, Stephen Stills and Graham Nash -- known collectively as Crosby, Stills & Nash (CSN) -- have expanded their summer touring plans for the U.S. through the end of summer. The folk-rock trio's second leg of national concerts picks up July 26 at the Gathering of the Vibes Festival in Bridgeport, CT, and stretches through September 28-29 at Humphrey's Concerts by the Bay in San Diego, CA.

With the addition of more than 10 shows, the entire U.S. tour is now scheduled to hit 23 cities throughout the summer months. Highlights of the most recently added dates are an August 1 performance at Pabst Theater in Milwaukee, WI, and an August 14 concert at Filene Center at Wolf Trap in Vienna, VA.

Legendary folk-rock supergroup Crosby, Stills & Nash (CSN) will take their harmonies across the United States this summer on the first leg of a new tour. David Crosby, Stephen Stills and Graham Nash will launch the outing on June 3 at Chaifetz Arena in St. Louis, MO, and wrap June 14 at the Bank of America Pavilion in Boston, MA.

The seven-show U.S. run also includes a June 4 performance at Charter One Pavilion in Chicago, IL, and a June 13 concert at the MGM Grand Theater in Mashantucket, CT. The full itinerary is listed below.