He ran 31 miles at each location, and completed the challenge in five-and-a-half days.
Business strategist Jim Collins takes on this challenge in his latest book, How the Mighty Fall.
Obama, throughout his career, has faced a challenge in how best to manage his political antecedent.
Being in the right place at the right time is a challenge in China's shifting landscape.
"These figures reflect what has been a challenge in Europe for a number years, " she said.
The challenge in understanding the modern consumer is making sense of the multiple sources of evidence.
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The challenge in working with the language was expressing things and not using English words.
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This represents a clear challenge in the post-September 11 world where information sharing is key.
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But he added, there is a major challenge in ensuring that law is enforced everywhere.
But the challenge in Helmand is, and always has been, to win over the local population.
Obama's first challenge in the third hundred days must be to diminish problem number one.
The main Northern Ireland interest in Cork will be Gareth Turnbull's challenge in the 1500m.
Similar laws are under challenge in lower courts in Georgia, Alabama, Utah and South Carolina.
In their testimony, these men made clear that our challenge in Iraq is formidable.
American faced an additional challenge in emerging from bankruptcy, which it entered in November 2011.
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But Griffith says derivative suits face a tough challenge in proving disloyalty to shareholders.
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So that's going to give the Democrats even a greater challenge in terms of forging unity.
The other big challenge in finding that data is the ability to actually use it.
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Then, just teaching Donohoo to talk was a challenge in itself, Nancy Donohoo said.
Mrs Chapple, who lives near Stowmarket in Suffolk, began her council challenge in 2009.
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What is more, such decisions are immune to challenge in the normal legislative process.
For the first time in years, the Canadians also face a foreign challenge in retail banking.
Our challenge in the conservation community is to make a top issue like the economy.
Following the debate, Mr Burstow said the government launched a dementia challenge in March.
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"I have given myself a challenge in coming here, " Rabier told a Ouagadougou press conference.
They recognise that the NHS is facing a real challenge in just standing still.
However, the challenge in implementing the Convention is translating its grand words into concrete actions.
My biggest parental challenge in education comes from convincing my children to memorize things.
We have a real challenge in America when it comes to our economy and employment.
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Playmoolah was a winner in the Innotribe Startup Challenge in Singapore earlier this year.
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