London's running club Sikhs in the City has organised the relay race to mark the centenary of World War I as message of "cooperation and harmony".
The India-born British Sikh, the club's founding member who was three in 1914 when the conflict started, told the 'Ilford Recorder': "I urge everyone to support the race as there is too much violence in the world today."
He said Sikhs in the city represents Britain in the Luxembourg Interfaith Marathon each year to show how all faiths can share a common effort for peace and harmony.
Singh, who was born in India in 1911, took up running in his 80s to distract himself from the trauma of losing his son, daughter and wife in quick succession.
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He completed the London Marathon at the age of 89 before retiring after the Hong Kong marathon last year.
While he no longer runs, he keeps active by walking the same distance every day.
His trainer Harmander Singh, who is organising the event with the club, said the race was particularly in honour of the "forgotten victims" of conflicts - women and the elderly.
"There are so many conflicts across the globe, some are politically motivated, others are for economic gain and sadly some people misuse their faith as a reason to inflict harm on others even though all religions preach peace," he said.
The event starts in London at 9am on August 24 and will comprise 21 laps of a 2km route, with participants receiving a commemorative medal and T-shirt.
There will also be a 10km (five laps) and a 22km (11 laps) for anyone else who wants to take part.