Six superhuman Royal Marine Commandos taking part in an extraordinary challenge to celebrate the 350th birthday of the force, will run into Deal this afternoon (Monday.)

At 3.30pm, as part of the RM350 1664 challenge, they will march along The Strand in Walmer, escorted by other runners from the Royal Marines Band Service and led by the Band of HM Royal Marines Portsmouth into Deal Castle in Marine Road.

In February, they skied for 1664km across Norway, then sailed in yachts for 1664km to Cadiz, Spain, whereupon they disembarked the yachts and hopped on bikes to cycle for 1664km through Spain and France until they reached the English Channel.

At this point the same six Commandos boarded kayaks and crossed the water in 64 hours, arriving in the UK on Saturday, March 22.

Since then they have been running approximately 20 miles a day and will continue to do so until Friday, July 25 when they reach 1664km in London.

The remarkable challenge is being undertaken in order to inform people of the three-and-a-half centuries of unbroken service in protecting and promoting the nation’s security, prosperity and reputation; both at home and overseas.

They are raising money for the Royal Marines Charitable Trust Fund.

Major Richard Long said: “It should be a really good event. The six outstanding Royal Marines who have been travelling by ski, boat, bike, canoe and foot, since February, will be arriving at this famous former home of the Royal Marines and look forward to seeing the many people who come out to cheer them on.”