He's certainly put in the training - having originally planned to compete in the 2010 London Marathon - but the big day is finally drawing near for Tomy boss Robert Mann.
Mann's training for the event began back in October 2009 - although an administration error meant he's had to wait until April 17th this year to finally take on the 26.2 mile course.
He completed a number of events in 2010 as part of his preparation, however, including the UK Kilo marathon, the London Triathlon and The Great North Run.
And, he says, despite being beaten to the finish by an octogenarian and a guy in a gorilla outfit, his enthusiasm for the challenge remains high.
Mann will be raising money for the BTHA Toy Trust and wishes to encourage both private and corporate sponsorship. All funds raised will go towards helping disabled and disadvantaged children's charities through the Trust.
Individuals can sponsor Mann by clicking here to visit his Virgin Money Giving site. Corporate cheques payable to the Toy Trust should be sent c/o Pat Biggin at Tomy UK, St Nicholas House, St Nicholas Road, Sutton, Surrey, SM1 1EH.
Asked how the training was going, Mann said: "It has been difficult to maintain a regular training programme, particularly with the bad weather through December and overseas travel to Hong Kong, Tokyo and various fairs. However, I have been encouraged by the film Run, Fay Boy, Run and hope to finish well before last year's 'slowest' time of nine hours and 34 minutes."