On 19 February 2010 "The Cave" debuted at number 43 on the Irish Singles Chart, making it Mumford & Sons's second single to make an impact on the Irish Chart. The following week the single climbed to No. 29, and on 5 March 2010, "The Cave" reached a new peak of No. 20, beating Little Lion Man's peak placement of No. 21. "The Cave" then debuted in the Irish Top 10 on 26 March 2010 at No. 10.
The song was also featured on VH1's top 40 video's of 2011
"The Cave" first entered the UK Singles Chart on 7 February 2010, at No. 88. The following week, the single climbed eighteen places to No. 70 and then climbed a further 7 to No. 63. The single then climbed to No. 51, and on 7 March 2010, following the physical release of "The Cave", the single climbed to No. 37, making it Mumford & Sons second Top 40 hit in the UK. The single remained at a fixed position of No. 37 for three weeks. On 28 March 2010, the single climbed five places to No. 32, then reached a peak of No. 31.
As of April 2013, the song has sold 1,778,000 copies in the US.
In May 2012, the song featured on a Lastminute.com advertisement and on the ITVWorld Cup 2010 coverage in England. It was also featured prominently in the pilot episode of the Fox Network's new drama Lone Star. The song also featured on the first episode of the fourth season of British TV series Skins. The song is referenced in the song "All My Lows" by British musician Example with the lyric "Lost in a cave like sons of Mumford".
The official music video for "The Cave" features each of the four band members driving on scooters through the roads of Goa, India while singing the song in tandem with four Indian men in marching band uniforms to whom they gave their instruments at the start of the video.