C2C: Country to Country is a country music festival that has been held in Europe every year since 2013. It was first held in London on 16–17 March 2013. The festival was the first multi-day country music event in the United Kingdom, since the demise of the popular International Festival of Country Music, which was held at Wembley Arena and hosted by Mervyn Conn. The event was jointly developed by the O2 Arena and SJM Concerts, collaborating with the Country Music Association. In 2019 it had a capacity of 25,000.

The 3Arena (originally The O2) is an indoor amphitheatre located at North Wall Quay in the Dublin Docklands in Dublin, Ireland. The venue opened as The O2 on 16 December 2008 and was re-branded on 4 September 2014 due to the takeover of O2 Ireland by Three Ireland. The venue is owned by a Live Nation subsidiary, Apollo Leisure Group Ltd. and is among the top ten busiest music arenas by ticket sales in the world.