HE has been shot at, arrested, broken a world record and cycled from Bangkok to Gloucester raising thousands of pounds for charity.
But Jamie McDonald's next challenge is going to be really, really tough.
The 26-year-old aims to become the first person to run across Canada unaided.
His run will be the equivalent of more than 200 marathons.
If he succeeds, he will be the first European to attempt the challenge and the first ever person to attempt it unaided.
Jamie is attempting to run Canada coast to coast, more than 5,000 miles unaided, in aid of Great Ormond Street Hospital Children's Charity and the Pied Piper Appeal.
He will face snow storms, -30°C temperatures, hundreds of miles without food and water and bears - all while carrying a 15kg backpack.
Jamie is hoping to raise £60,000, which will be split equally between his chosen charities. £30,000 would help Great Ormond Street Hospital Children's Charity to fund a member of the play hospital team.
The adventurer cycled 14,000 miles from Bangkok to Gloucester in 2012, passing through dozens of countries as he made his way home.
Along the way he was shot at, arrested and slept rough, much of which was documented in self-recorded videos uploaded onto Youtube throughout.
Just two days after finishing the journey back from Bangkok, Jamie made the decision to attempt the world static cycling record, which stood at 224 hours and 24 minutes.
He finally stepped off the stationary bike after pedalling for 265 hours – more than eleven days.
He completed the attempt in a marquee erected in Gloucester’s docklands.
He raised tens of thousands of pounds in the process of both challenges for the Pied Piper appeal, a charity that helped Jamie when he was a child and in and out of hospital for nine years with a rare spinal condition. He also spent a great deal of time at Great Ormond Street.
Jamie will begin his battle against the harsh Canadian climate in March from St John’s, Labrador and aims to complete his journey in Vancouver, running from the Atlantic to the Pacific.
Jamie’s route will take him through mountain ranges, national parks and dangerous terrain.
During his last two challenges, Jamie received support from celebrities including Gloucester and England rugby players including World Cup winners Phil Vickery, Mike Tindall and Jimmy Cowan, television presenter Vernon Kay and comedian John Bishop, who completed the week of hell challenge for Sport Relief.
Bishop tweeted to say ‘massive effort. Very impressive if a little mad!’
Jamie McDonald said: “I want to be the first ever person to run Canada coast to coast completely unaided.
"This will, without doubt, be my toughest challenge yet. Some days I may only make it a few miles given the harshness of the terrain, but I’ll persevere no matter what.
“The support throughout my last two challenges was phenomenal and I really want to show people that you can do anything you put your mind to.
"I can’t say I’m not nervous being the first person to do it unaided, because there’ll be danger in every step, food will be scarce and there’ll be nothing for hundreds of miles at times.
"I’m in no doubt that my life is in serious danger doing it unaided, but I’m confident in my ability and will be spurred on by the thought I’m raising money for charities close to my heart.”
Jamie is hoping to hear from potential brand sponsors who can aid financially.
Follow him on Twitter: @MrJamieMcdonald