It was held on 1 September 2013, over a distance of 243 km (151.0 mi), starting and finishing in Plouay, France.

It was the twenty-fourth race of the 2013 UCI World Tour season.

The race was won by Lampre–Merida's Filippo Pozzato, Pozzato finished ahead RadioShack–Leopard's Giacomo Nizzolo and Ag2r–La Mondiale's Samuel Dumoulin, who completed the podium.

As the GP Ouest-France was a UCI World Tour event, all 19 UCI ProTeams were invited automatically and obligated to send a squad.

Five other squads were given wildcard places into the race, and as such, formed the event's 24-team peloton.