After a year on the road, rock group Nickelback brings its on-going Dark Horse Tour full circle with extended run in North America this spring.

The band initially announced just 11 concert dates for the planned outing, but the itinerary has now been expanded to a full 30 concert dates. The latest portion of the trek is set to launch April 6 at John Labatt Centre in London, ON, and concludes June 3 at General Motors Place in Vancouver, BC.

Highlights of the U.S. routing include performances on April 13 at Verizon Center in Washington, DC; April 23 at Scottrade Center in St. Louis, MO; May 8 at Memorial Coliseum in Portland, OR; and May 21 at Bradley Center in Milwaukee, WI.

North of the border, the band has a total of eight performances booked, including shows on April 8 at Air Canada Centre in Toronto, ON, and May 31 at Pengrowth Saddledome in Calgary, AB.

Ticket sales for the first portion of the tour began on December 4. Tickets for the remainder of the calendar will become available to the general public over the next couple of weeks, with onsales slated for January 16 and January 23. The official Web site for the trek, DarkHorseTour.com, offers full details on ticketing dates and times.

After a brief series of “warm-up concerts” in Europe, Nickelback launched the Dark Horse Tour in late February 2009 in Nashville, TN. The jaunt continued through April, and then returned to North America for a second round of performances over the summer.

Initial ticket sales catapulted the rock group to the top of TicketNews’ exclusive event rankings. The Canadian rock crew grabbed the No. 1 spot for concert events and the No. 2 overall ranking during the week ending March 15, 2009.

Nickelback released “Dark Horse,” its sixth studio album, in November 2008. The effort peaked at No. 2 on the Billboard 200, and currently stands at No. 46 on the same chart after 59 weeks.

Nickelback itinerary:
(Dates are subject to change.)

April 6 London, ON John Labatt Centre
April 8 Toronto, ON Air Canada Centre
April 9 Montreal, QC Bell Centre
April 11 Ottawa, ON Scotiabank Place
April 13 Washington, DC Verizon Center
April 14 Hampton VA Hampton Coliseum
April 16 Greenville, SC Bi-Lo Center
April 17 Greensboro, NC Greensboro Coliseum
April 19 Orlando, FL Amway Arena
April 21 Atlanta, GA Philips Arena
April 23 St. Louis, MO Scottrade Center
April 24 Tulsa, OK BOK Center
April 26 Kansas City, MO Sprint Center
May 5 Spokane, WA Spokane Arena
May 7 Tacoma, WA Tacoma Dome
May 8 Portland, OR Memorial Coliseum
May 10 Nampa, ID Idaho Center
May 14 Wichita, KS Intrust Bank Arena
May 15 Dallas, TX American Airlines Center
May 18 Rosemont, IL Allstate Arena
May 19 Grand Rapids, MI Van Andel Arena
May 21 Milwaukee, WI Bradley Center
May 22 Noblesville, IN Verizon Wireless Music Center
May 24 Minneapolis, MN Target Center
May 25 Omaha, NE Qwest Center
May 27 Fargo, ND Fargodome
May 29 Saskatoon, SK Credit Union Center
May 31 Calgary, AB Pengrowth Saddledome
June 1 Edmonton, AB Rexall Place
June 3 Vancouver, BC General Motors Place