Gebrselassie was fulfilling a long-time promise made to race chairman Brendan Foster by taking part in the race.

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Brendan Foster, who won Olympic bronze for Britain in the 10, 000m at the 1976 Games, was hugely impressed by Twell's Edinburgh display.

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The commentary team, consisting of Steve Cram, Brendan Foster, Paul Dickenson and Ian Thompson, will keep an eye on all the action.

BBC: SPORT | Athletics | The BBC at the London Marathon

"It's finally a dream come true, " said race organiser Brendan Foster.

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Steve Cram, Brendan Foster and Ian Thompson - husband of competitor Tanni Grey-Thompson - will be on hand all day to provide commentary and expert analysis.

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Brendan Foster, the BBC commentator who described McColgan's victory in Tokyo as "the greatest ever by any British distance runner", paid tribute to her contribution to the sport.

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