As if running the London Marathon was not difficult enough...

Some participants in the London Marathon are determined to make themselves get noticed, or just make life difficult for themselves. Susie Hewer is attempting to break her own Guinness World Record for the 'longest scarf knitted whilst running a marathon'. Susie is running in aid of the Alzheimer's Research Trust.

Andrew Scriven intends to run this year's London Marathon in a Fred Flintstone outfit accompanied by his friend Lydia in a Wilma costume. They will be running together in an improvised Flintstone vehicle, in aid of the Stroke Association.

Susie, Andrew and Lydia's preferred ways to run a marathon seem strange enough, but they are dwarfed by the effort's of former professional footballer Lloyd Scott as listeners to the Palace Trail mp3 guided tour will discover. Lloyd has completed the London Marathon in some very unusual outfits in a bid to raise money for his charity. Visitors enjoying their Walk Talk Tour downloadable city guide will discover how Lloyd ran the 2002 London Marathon in an antiquated deep sea diving suit. He particpated in the London Marathon again in 2006 when he donned a 100lb suit of armour and pulled Derek, a 200lb dragon, round the course! This year he plan to complete the course in a 9ft iron giant costume, in a bid to raise funds for the Autism Trust.

For those of us with a lower pain threshold, strolling through St James's Park can be a most relaxing experience. Discover the history of the Park with a Walk Talk Tour podcast guided tour. The Palace Trail begins outside Westminster Abbey, then takes in the Houses of Parliament (including Big Ben), before heading up Whitehall past the national memorial to Britain's war dead, the Cenotaph, to the Prime Minster's official residence, 10 Downing Street.

People listening to the Palace Trail will have the opportunity to enjoy the pageantary of Horse Guards Parade, before discovering where the 'true' centre of London is located. Find out where London's smallest Police Station was once situated, before heading down the Mall into St James's Park. The Palace Trail finishes outside Buckingham Palace.

To find out more about the Palace Trail, please click here To listen to an audio sample from the Palace Trail, please click here