The North Face athlete Sebastien Chaigneau seems to be going from strength to strength after an impressive win at the Hardrock 100 Endurance Run earlier in the year .
Sebastien Chaigneau knows the UTMB route well .
The North Face athlete Sebastien Chaigneau seems to be going from strength to strength after an impressive win at the Hardrock 100 Endurance Run earlier in the year and he knows the UTMB route well .