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Great Britain's Sir Mo Farah in the first lap of the Men's 8km Event during the 2017 Great Edinburgh International XCountry in Holyrood Park. (Photo by Jane Barlow/PA Images via Getty Images)

Great Britain's Sir Mo Farah in the first lap of the Men's 8km Event during the 2017 Great Edinburgh International XCountry in Holyrood Park. (Photo by Jane Barlow/PA Images via Getty Images)

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Great Britain's Sir Mo Farah in the first lap of the Men's 8km Event during the 2017 Great Edinburgh International XCountry in Holyrood Park. (Photo by Jane Barlow/PA Images via Getty Images)

Great Britain's Sir Mo Farah in the first lap of the Men's 8km Event during the 2017 Great Edinburgh International XCountry in Holyrood Park. (Photo by Jane Barlow/PA Images via Getty Images)

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Great Britain's Sir Mo Farah and Callum Hawkins at the start of the Men's 8k during the 2017 Great Edinburgh International XCountry in Holyrood Park. (Photo by Ian Rutherford/PA Images via Getty Images)

Great Britain's Sir Mo Farah and Callum Hawkins at the start of the Men's 8k during the 2017 Great Edinburgh International XCountry in Holyrood Park. (Photo by Ian Rutherford/PA Images via Getty Images)

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Great Britain's Sir Mo Farah (centre) during the Men's 8km during the 2017 Great Edinburgh International XCountry event in Holyrood Park. (Photo by Jane Barlow/PA Images via Getty Images)

Great Britain's Sir Mo Farah (centre) during the Men's 8km during the 2017 Great Edinburgh International XCountry event in Holyrood Park. (Photo by Jane Barlow/PA Images via Getty Images)

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Great Britain's Sir Mo Farah in the Mens 8k during the 2017 Great Edinburgh International XCountry in Holyrood Park. (Photo by Ian Rutherford/PA Images via Getty Images)

Great Britain's Sir Mo Farah in the Mens 8k during the 2017 Great Edinburgh International XCountry in Holyrood Park. (Photo by Ian Rutherford/PA Images via Getty Images)