She also specialized in outdoor sport climbing and is considered the fourth-ever female climber in history to redpoint a 9a (5.14d)-graded route, which was PuntX, in Gorges du Loup, in FRA.

She retired in 2010, and as of 2022, still holds the record for the most Lead World Cup gold medals (male or female).

In November 2013, at the age of 39, she became the fourth-ever woman in history to climb a 9a (5.14d) graded route when she ascended PuntX in the (Gorges du Loup, FRA).

In 2016, at 43 years old, Sarkany ascended Era Vella in Margalef in Spain, becoming the first woman aged over 40 to climb a 9a (5.14d) graded route.

Source:[2] Muriel won 31 podiums at the World Cup of Difficulty.