Martin had set the early pace for a windswept 33 km course from Avranches to Mont Saint Michel in 36min 29sec but had a nervous wait as Froome threatened to upset his hopes of victory.
In the end Team Sky's leader Froome came home in second place at 12secs adrift but finished more than two minutes ahead of principal rival, two-time champion Alberto Contador of Spain.
> Chris Froome (SKY) 42h 29min 24sec
> Alejandro Valverde (MOV) +3:25
> Bauke Mollema (BKN) +3:37
> Alberto Contador (SAX) +3:54
> Roman Kreuziger (SAX) +3:57
> Laurens ten Dam (BKN) +4:10