The latest headline tour for Carrie Underwood begins in little under a month, and the country songbird now has a freshly extended itinerary that...

The latest headline tour for Carrie Underwood begins in little under a month, and the country songbird now has a freshly extended itinerary that will keep her on the road through the spring.

Originally scheduled from mid-March through the end of May, Underwood’s outing will now continue for at least one more month. The Play On Tour launches March 11 at Sovereign Center in Reading, PA, and concludes June 20 at Credit Union Center in Saskatoon, SK.

A total of nine dates were added to the trek, including performances on June 12 at BJCC Arena in Birmingham, AL; June 15 at JQH Arena in Springfield, MO; and June 18 at MTS Centre in Winnipeg, MB.

Underwood’s original Play On Tour itinerary includes stops on March 19 at Boardwalk hall in Atlantic City, NJ; March 31 at BlueCross Arena in Rochester, NY; April 9 at Conseco Fieldhouse in Indianapolis, IN; and April 25 at U.S. Bank Arena in Cincinnati, OH.

Tickets are already available for the country singer’s previously announced dates. New onsales will start up on February 12 and 13 for some of the latest concert additions. Craig Morgan and special opening band Sons of Sylvia will also continue their supporting duties through the new June dates.

Underwood’s previous headlining experience was the 2008 Carnival Ride Tour. According to a statement on her official Web site, that lengthy venture included 137 performances with a total audience turnout of 1.2 million. So far, her 2010 calendar features just 54 concerts.

Carrie Underwood itinerary:
(Dates are subject to change.)

March 11Reading, PASovereign Center
March 12Albany, NYTimes Union Center
March 13Providence, RIDunkin Donuts Center
March 15Portland, MECumberland County Civic Center
March 16Bridgeport, CTArena at HarborYard
March 19Atlantic City, NJBoardwalk Hall
March 20Mashantucket, CTMGM Grand Theater
March 21Worcester, MADCU Center
March 23Hamilton, ONCopps Coliseum
March 24Kanata, ONScotiabank Place
March 26Trenton, NJSun National Bank Center
March 27Amherst, MAMullins Center
March 29Wilkes Barre, PAWachovia Arena
March 31Rochester, NYBlueCross Arena
April 1Pittsburgh, PAPetersen Civic Center
April 3Pikeville, KYEastern Kentucky Expo Center
April 6Columbus, OHSchottenstein Center
April 7Peoria, ILPeoria Civic Center
April 9Indianapolis, INConseco Fieldhouse
April 10Rockford, ILRockford MetroCentre
April 12Ft Wayne, INAllen County War Memorial
April 13Saginaw, MIDow Events Center
April 14Lansing, MIBreslin Student Events Center
April 23Grand Rapids, MIVan Andel Arena
April 24Toledo, OHLucas County Arenav
April 25Cincinnati, OHUS Bank Arena
April 27Richmond, VARichmond Coliseum
April 28Charleston, WVCharleston Civic Center
April 30Fayetteville, NCCrown Coliseum
May 1Columbia, SCColonial Life Arena
May 2Augusta, GAJames Brown Arena
May 4Tallahassee, FLTallahassee County Civic Center
May 5Pensacola, FLPensacola Civic Center
May 7New Orleans, LALakefront Arena
May 8Lafayette, LACajundome
May 10Beaumont, TXFord Park Events Center
May 12Austin, TXFrank Erwin Center
May 13Corpus Christi, TXAmerican Bank Center
May 15Tucson, AZTucson Arena
May 18Fresno, CASaveMart Center
May 20Sacramento, CAARCO Arena
May 21Reno, NVReno Events Center
May 22Las Vegas, NVOrleans Arena
May 29Everett, WAComcast Arena
May 30Spokane, WASpokane Arena
June 1Nampa, IDThe Idaho Center
June 3Broomfield, COOdeum Colorado
June 4Colorado Springs, COColorado Springs World Arena
June 12Birmingham, ALBJCC Arena
June 13Lexington, KYRupp Arena
June 15Springfield, MOJOH Arena
June 17Fargo, NDFargodome
June 18Winnipeg, MBMTS Centre
June 20Saskatoon, SKCredit Union Centre