Twain, 49, announced her 48-city tour on her website on Wednesday, reported Huffington Post.
"This is my last tour, so I'm going to make the most of it. I want to go out with a bang. It's the after-party tour. That's how I see it. It's the after-party to all of these years," the singer said.
The 'Rock This Country' tour kicks off in Seattle and runs until August 23 in Fresno, California, with stops throughout the US and Canada.