A late surge by Northug of Norway saw him fight his way past Italy 's Francesco de Fabiani to move into second place .
Norway 's Sundby proved unstoppable as he took his sixth consecutive Tour victory and kept his winning streak alive .
A late surge by Northug of Norway saw Sundby fight Sundby 's way past Italy 's Francesco de Fabiani to move into second place .
Norway 's Sundby proved unstoppable as he took his sixth consecutive Tour victory and kept his winning streak alive .