There will be a salute to athletes past and present at the Olympic opening ceremony, it has been claimed.
London Marathon co-founder John Disley, 83, said he is preparing for "a very long day" on July 27. It will start with a ride on a boat bearing his name that will help the Olympic Flame to the opening ceremony.
Mr Disley, who was a 1952 Olympic steeplechase bronze medallist, said: "It is going to be the start of a very long day because the old Olympian medallists are in some way meant to be involved in some way in the stadium. It will obviously happen if they are going to salute the British team. The parade of teams is very long and the British team are near the end."
The London 2012 flotilla will be Mr Disley's first trip on the John Disley, a four-man Rosalind skiff.
It will sail on the River Thames among 40 small boats accompanying the flame from Hampton Court to Richmond Bridge on the day the Games open.
He said: "I am looking forward to it and also to being able to tell my grandchildren that I have been a part of it."
A London 2012 spokesman said they would not comment on speculation about the opening ceremony.
Forecasters predict the £27 million spectacular will benefit from dry conditions and a cooler temperature than the 30C expected on Tuesday and Wednesday.
Helen Rossington, a forecaster with MeteoGroup, the weather division of the Press Association, said: "It won't be quite as hot on Friday. It's likely that it will be dry for the opening ceremony, but there is a small chance of a shower."