Marion Cavaillé was born in Castres in 1983, at the age of 8 she begins dancing at the National School of Music and Dance of the Tarn. At the age of 14, she obtains the gold medal in Classic and contemporary dance. The following year, she joins the National School of Dance in Marseille. At the end of her course she graduates in first place.

In 2002, she is an award winner at the Dance Forum of Monte-Carlo.

In 2003 Marion joins the Ballet National de Marseille directed by M.-C Pietragalla. There, she’s been dancing M.-C Pietragalla, M. Petipa, G. Balanchine, Carolyn Carlson and Tero Saarinen’s pieces.

In 2005, Frederic Flamand, newly appointed director of the BNM, chooses her to interpret Silent Collisions in Amsterdam, Barcelona, and Marseille. She also takes part in the latest creation by Flamand, "la Cité Radieuse" (2005) and "Metamorphoses" (2007).

In March 2006, she takes her first steps in Choreography, by creating “En Passant par Là” a performance commissioned by the National School of Dance of Marseille, also performed during the Festival “Extravadances” in Castres. In 2008, she creates "Code Barre" for a free hand to the BNM’s dancers.