After graduating from the Eva Jaczová Dance Conservatory in Bratislava he joined the Ballet Company of the Slovak National Theatre in 1989. Within a short period of time he became a principal dancer. He received acclaim for his ability to combine a brilliant dancing technique with a natural acting talent and a masculine expression. Indisputable proof of his extraordinary talent was the first prize of the Czechoslovak Ballet Competition in 1990.
In 1992 he was invited to dance with Jiri Kilian’s Netherlands Dance Theatre in the Hague. During his seven years with this ensemble he had the opportunity to cooperate with world-known choreographers Jiří Kylián, Mats Ek, Nacho Duato, Ohad Nahrin, William Forsythe, Édouard Locke among others. Gideon Obarzanek, Itzik Galili, James Kudelka, John Alaine, Christopher Weeldon, Stein Celis, Fernand Nault, Libor Vaculík and many others influenced Radačovský’s artistic and personal growth. In 1999 he accepted the offer to become principal dancer of Les Grand Ballets Canadiens in Montreal.
Mário Radačovský has been a regular participant of International Ballet Gala – Gala des étoiles in Montreal (2000 - 2006), Gala Stars in Toronto (2003), Gala Stars in Budapest (2005, 2007) and Gala Meeting in Prague (2003 – 2006). He also performed as a guest star with many major dance companies, e.g. Royal Winnipeg Ballet (2005), Ballet British Columbia (2004, 2006), Toronto (2005), Jacob’s Pillow (2007).
He started to create choreographies in 2002. His debut was a piece called The Letter. His other pieces include: Passage à l‘eau trouble (2002), Valse; Inspiration (2003), Bolero (2004), Shadows and Lights (2005), Balansoire (2006), Meeting with a Swan, Soufflé des oiseaux (2007). For the Slovak National Theatre Ballet he created the following pieces: Change(2005), Warhol (2007) and 68 (2008). In April 2009 he premiered two new pieces: A Dinner, presented by the Magyar Ballet Színház in Budapest, followed by a duet Ulrich for the National Theatre in Brno. In late 2009, the Slovak National Theatre Ballet premiered his second feature ballet by the name of Everest. In the 2010/2011 season he has been working on two feature pieces: María de Buenos Aires with the National Opereta Theatre in Bucharest, Romania, andRomeo and Juliet with Grand Rapids Ballet Company in Michigan, United States where he will be the house choreographer from the season 2011/2012. Mário is currently working on Claude Debussy´s ballet Toy Box played by the Montreal Symphony Orchestra and conducted by Ken Nagano.
Mário Radačovský served as artistic director of the Slovak National Theatre Ballet company from 2006 until May 2010. Since 2013, he is the artistic director of the Ballet of the National Theatre Brno.