He's covering each stage of the event, which is currently underway in France.
An Athlone student is cycling over 1000 kilometres to raise funds for breast cancer research.
Graham O'Brien is taking part in the All-Ireland Cycling Challenge, covering the distance of each stage of the Tour de France.
A former member of the under-23 Irish national cycling team, he's doing an average of 190 kilometres per day until Sunday.
The Shannonside Cycling clubman says recovery is important after doing six hours on the bike: