Some of the most well-known country songs never reached No. 1. Heck, a few didn't even break the Billboard Top 40.

Shania Twain's most famous song wasn't a "hit" if you define the word in terms of songs that reached the top of the country airplay chart. Sugarland's most well-known song didn't top the charts either. Neither did career-defining songs for Reba McEntire, Blake Shelton, Little Big Town and Big & Rich.

Chris Stapleton's most well-known song barely dented the charts, and Kid Rock's best-known country effort didn't break the Top 20. There's no shame in a No. 2, especially when the song goes gold or platinum for 500,000 or one million in sales. Who is going to deny that "Gentle On My Mind" is a country hit? Glen Campbell's song only peaked at No. 30 in 1967.

Which song surprised you? Let us know in the comments section below. After watching, be sure to subscribe and then watch more This List videos. Recently we started a pretty healthy debate about who should and shouldn't be in the Country Music Hall of Fame.

Watch: 11 Country Singers Who Should Be In the Hall of Fame