At the 2008 Summer Olympics in Beijing, Chausson competed for France in the inaugural women's BMX event, winning the gold medal.

Winning the 1993 downhill junior world championship gold medal started her international successful career.

Her amazing skills under different weather and track conditions were proofed after finishing 2nd in a muddy and at start level snow-covered Hindelang/GER World Cup.

In 2000, Chausson expanded her competitive repertoire, participating in the duals event, in which riders compete on parallel courses, composed of identical obstacles—primarily jumps and berms—in a single-elimination tournament, during the third season in which it was contested at the World Cup level, after which the 2000 iteration of the world championships featured the event for the first time; Chausson captured each crown, ahead each time of American Tara Llanes.

The four-cross BMX racing-inspired event, in which four cyclists ride on the same course betwixt gates, such that only the top finisher advances to a subsequent round, was chosen in 2001 by the National Off-Road Bicycle Association, the sports authority governing mountain biking for USA Cycling, to replace the duals and duals-slalom events and replaced the duals event in 2002 in both the World Cup and world championships competitions; Chausson nevertheless won the four-cross and downhill titles in each, ahead of countrymate Sabrina Jonnier in each, save for in the four-cross event at the world championships, where she topped Miller.

[1] Chausson was chosen to represent France in the inaugural women's BMX event at the 2008 Summer Olympics in Beijing, with Laëtitia Le Corguillé.