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Marathon runner Gerard Vacher and his wife Sylvie (not pictured) on a 5,000-kilometer bike journey from Alger, Algeria to Abidjan, Ivory Cost. Gerard Vacher splashs his face with cold wate from a bottle. (Photo by Eric Préau/Sygma via Getty Images)

Marathon runner Gerard Vacher and his wife Sylvie (not pictured) on a 5,000-kilometer bike journey from Alger, Algeria to Abidjan, Ivory Cost. Gerard Vacher splashs his face with cold wate from a bottle. (Photo by Eric Préau/Sygma via Getty Images)