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I am looking at a four-year-old off-track Thoroughbred for use as an eventer. He is currently higher in the back end. Will his withers catch up? At what age do Thoroughbreds stop growing?
Last Updated: January 05, 2010
If this Thoroughbred is a full four years old, then he has probably reached his maximum height unless there is some warm-blood influence in his pedigree. Research shows that Thoroughbreds reach nearly 90% of their mature height by 18 months.
If the horse is four years old, it is unlikely that he will develop a more level topline from withers to croup.
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