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He is the youngest person to have conquered 100 marathons and holds the world record for being the youngest and fastest person to run 10 marathons in 10 days.
But Adam Holland has added another first to his list of achievements - beating a horse in a 10-mile race.
The 27-year-old won the unusual contest, taking on Tango, a five-year-old 14.2 hands high Appaloosa Welsh Horse.
The pair raced through the Devonshire countryside, taking on moorland and bridleways near Tavistock.
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