John Biggs (27), Ollie Bage (25) and Dave Booth (26) will drive 10,000 milesacross the mountains, desert and steppe of Europe and Asia on Sunday 16th July.
The rules are simple; you can only use a car with a 1ltr engine or less and you must raise money for charity.
The Mongol Rally is designed to be a true adventure and is one of eight extreme travel charity challenges on offer by events organiser The Adventurists..
There's no backup, no support and no set route; just you, your fellow adventurists and a rally style car you must buy from a scrapyard.
In the boys case a slightly knackered bright red Vauxhall Agila, known as the Ulaan Baatar Party Car.
Mongol Rally 2016
The rally is designed for people to take their time and explore as much as possible, so the intrepid team have decided to take a route through all the places that interest them culturally, educationally and recreationally.
Their chosen path takes them through seventeen different countries starting in London, England and ending in Ulaan Baatar the capital of Mongolia.
Their route will feature a variety of tough terrains, environments and extreme weather conditions most notably Turkmenistan, Uzbekistan, Kazakhstan and Mongolia.
As the rally day draws near they're going through the processes of acquiring VISAs and Letters of Invitation from countries that are notoriously difficult to enter.
So far they have had no problems and are set to raise a minimum of £300 for St. John's, where John currently works:
"It had always been a dream of ours to take on the rally and despite losing contact with one another as we moved to separate parts of Brighton and London we all eventually got back in touch and decided to make the dream a reality.
"It's going to be extremely tough and possibly dangerous in parts but to support such a worthy cause and make a difference to local people with learning disabilities will be so worth it."