The EF Education-Nippo rider, who is taking on the entire Tour de France route including transfers, made his way through Andorra to Cap de Bouirex in what was a gruelling 270-kilometre effort.
Morton has now covered an incredible 3,895 Kilometres over 160 hours in the saddle all while raising $A441,102 for World Bicycle Relief.
It was a cold start to the day for Morton as he set off ahead of his toughest day of climbing.
Joining him on the ride was his EF Education-Nippo teammate, Whelan, while Denis and Morton’s wife Rachel stopped in to visit Lachlan for lunch.
“It’s just nice to see some familiar faces,” Morton said.
“If I’m honest, I was worried about seeing Rachel halfway through something like this, because sometimes you just let your guard down a bit, let yourself think about the finish and what it’s like at home, and it just breaks that mentality you had. But I’m really glad I got to see her.”
After persisting with pedals purchased from a supermarket on day 3, Morton was finally able to upgrade to a set of mountain bike flat pedals which proved to be a major game-changer.
Tomorrow, Morton will aim to ride 335 kilometres from Cap de Bouirex to Col Du Portet, including more than 5000 metres of climbing, as he edges closer to Paris.