 A large breakaway escaped in the early part of the stage . This included 31 riders , representing a variety of teams but not Team Sky or Etixx – Quick @-@ Step . Tim Wellens ( Lotto – Soudal ) was the best placed rider on general classification , 1 ' 25 " behind Kwiatkowski ; he was the virtual leader of the race through much of the day . Wellens 's teammate Thomas De Gendt was also in the breakaway : he won the first two climbs of the day to increase his lead in the mountains classification . 
