The Jubilee Debt Campaign and the World Development Movement have recruited British athletics legend Steve Cram to take part in a publicity stunt this week.
Cram was due to join MPs from all the major parties on Tuesday in a 'race against Third World debt' outside the Houses of Parliament.
MPs wearing shirts bearing the names of some of the countries hit most severely by debt were expected to race 30 metres with sacks on their backs to represent the burden of moving forward under a heavy burden.
Other hurdles, representing the International Monetary Fund and the World Bank, were to be put in their path, and more than 30 MPs, including Labour's Oona King had agreed to take part.
The race is part of a series of events to mark the fifth anniversary of the G8 summit in Birmingham, where 70,000 debt protestors formed a human chain around the world leaders attending.