In what is being promoted as the biggest mixed martial arts bout of 2026, Ilia Topuria will face Justin Gaethje in the main event for the undisputed Ultimate Fighting Championship (UFC) Lightweight Championship on June 14 in Washington, DC.The blockbuster 155-pound (70kg) fight will headline the UFC Freedom 250 event, taking place outdoors on the lawns of the White House and with the US President Donald Trump expected to be in attendance, along with other celebrities.Topuria, who is unbeaten, vacated his lightweight title in late 2025 due to personal reasons and despite being the challenger now, will start as the favourite against interim belt holder Gaethje of the United States.Here is all to know before the fight:Why is there a UFC event at the White House?The UFC event is planned as a part of the Freedom 250 celebrations organised by the Trump White House, running parallel to the congressionally funded, bipartisan America250 series of events celebrating the United States’s 250th anniversary, going back to the signing of the US Declaration of Independence on July 4, 1776.The Freedom 250 celebration made news recently when the majority of a slate of musicians withdrew from a planned concert series, many citing concerns about the event’s political affiliations, as well as confusion with the America250 celebrations and about what they had signed up for.The date of UFC 250 itself is timed to take place on President Trump’s 80th birthday on June 14. Trump has a long involvement with UFC, going back more than two decades.Construction continues on a temporary arena that will host the UFC Freedom 250 fight card at the White House in Washington, DC, US [Evelyn Hockstein/Reuters]When and where will UFC Freedom 250 be held?