Two ex-military men who lost a leg during their service are hoping to defy all odds by tackling what has been called "the toughest trek in the world". 

Richard Davies, 37 and Richard Potter, 40 both lost their left leg while serving as an RAF Corporal and British Army Captain respectively.

Despite this the pair are hoping to become the first disabled people to take on, and conquer, the 216-mile Bhutan Snowman Trek in South Asia in 35 days or less.

The duo will be starting the 216-mile trek on October 7The duo will be starting the 216-mile trek on October 7 (Image: Richard Davies)

Mr Davies, who lives in Horstead, said: "It's an idea we've flirted with for about a year now and somehow we managed to pull in the sponsors and backing to make it happen.

"The first leg of the trek starts on October 7 and it's going to be a hell of a challenge."

Mr Potter, who lives in Brundall and is the district councillor for Old Catton and Sprowston West, added: "We'll need to listen to our stumps and take measures to protect ourselves, we're under no illusion just how physical this will be.

"Things like blisters or wounds will crop up but it's more difficult to deal with."

The pair will be travelling to Bhutan, between China and India, for the challengeThe pair will be travelling to Bhutan, between China and India, for the challenge (Image: Archant)

With altitudes reaching roughly 18,000ft above sea level the pair have been doing their best at recreating the thin air and terrain.

Mr Davies said: "We've been doing a lot of cardio while loading up with 10 to 15kg rucksacks.

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"We've trekked along Pen y Fan in Wales to try and prepare, but there's nothing that comes close in the UK to what we'll experience.

Both Richard Potter, left and Richard Davies, right lost their left leg while in military serviceBoth Richard Potter, left and Richard Davies, right lost their left leg while in military service (Image: Richard Davies)

"It can also drop to minus 18C at night so we've been lucky enough to have some specialised jackets sent to us and the latest socket and foot technology to help with the journey."

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Mr Potter added: "We're fairly confident but a lot of our success will come down to the weather.

"We could be going from waist-deep monsoon water to snow, within 24 hours."

The duo are also looking to raise money for both Blesma, which helps all serving and ex-service men and women who have lost limbs and the Royal British Legion.

The duo said they're under no illusion just how physical the trek will beThe duo said they're under no illusion just how physical the trek will be (Image: Richard Davies)

'The highest unclimbed mountain in the world'

Officially called the Kingdom of Bhutan it is located in the Eastern Himalayas between China and India with a population of 727,145.

In the Bhutanese Himalayas, Gangkhar Puensum is the highest peak, at 24,836ft above sea level and is the highest unclimbed mountain in the world.

The famous Tigers Nest monastery in BhutanThe famous Tigers Nest monastery in Bhutan (Image: Archant)

It can cost a lot to even get into the country however, with its Sustainable Development Fee (SDF) which costs £78 per day and makes it the most expensive tourist tax in the world.

Tourists should be aware of certain Bhutanese law, such as gaining permission into temples and no smoking in public places.