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

BBC: Ethiopian Haile Gebrselassie wins the Great North Run

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

BBC: 'New Paula' targets gold in 2012

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