What is the longest piste in La Plagne??

Blue, red and black :-)

:Dhi,not entirely sure but i have just looked on a piste map an i think you cn ski all the way down from the Roche De Mio at 2700m down to Montchavin at 1250m and would say that taking into account it is not a straight line schuss looks to be around 4km ,and is made up of blues and reds with a black option half way down. :D,on the les arcs side the longest run down is from the top of the Aiguille Rouge all the way down to Le Pre which is about 7km and is Black at the top and red from the midle part down with a slightly tricky part half way as well but is red,(can be skied ok by a confidant intermediate). :D
jonG