Start at the edge of Cap Coz Village. This path is part of the greater "Sentier Cotier" pathway that runs along the Brittany coastline.
It's a fun little "roller coaster " type run, with lots of sharp winding turns and small ups and downs. You cross a few hidden private beaches and go through the village of Beg Meil at one point. The run has amazing sea views and you have mostly pine forest cover. You pass a few mansions along the way as well as a few geocache sites.
It's a very popular route during the summer holidays and weekends!