Racehorse Heights

The height of a racehorse is always a hot topic, with trainers, breeders and sales consignors often quick to make assumptions about scope and even ability based on how high a horse stands. A horse is measured in 'hands' (equivalent to four inches) from the ground to the top of the wither.

In general, Flat horses are smaller than Jumps horses, although as with humans, it's impossible to pigeon-hole horses to that extent. New Seeker, a very successful Flat horse for Elite Racing Club, was rejected by many top agents as a yearling as he was considered too big. Standing at almost 17hh, New Seeker proved most judges wrong and won twice at Royal Ascot as well as six other races. Conversely, Alan King trained the diminutive Katchit to win both the Triumph Hurdle and Champion Hurdle. Standing at 'barely 15.2hh', Katchit, would be considered by many to be too small for the Jumps game, but he was one of the most successful hurdlers of his era and had more guts than many of his bigger rivals. Top Notch, one of Nicky Henderson's most successful current inmates, was a very good hurdler and finished fifth in the 2016 Champion Hurdle. A few eyebrows were raised when Nicky sent Top Notch chasing the following season, but the 'tiny' son of Poliglote took to the bigger fences like a duck to water and landed the Grade 2 Oaksey Chase at Sandown in April.

Paul Nicholls is renowned for training top-class chasers and despite Big Buck's' prowess over hurdles, connections were always keen to send him over fences because of his size and scope. However, after a couple of failed attempts, including a high-profile unseating of Sam Thomas in the 2008 Hennessy Gold Cup, Paul decided to shelve the chasing route and stick to hurdles. To look at Big Buck's, he was the classic chaser, but it's possible that his large size (17.1hh) compromised his ability to be athletic over the larger obstacles.

All horses are different and it's wise not to make too many predictions about a horse's future capabilities based on its size, until a horse proves it themselves. It would not be unusual for a 15.2hh horse to have more scope than a 16.2hh horse once on the move. Natural athleticism might mean that a small horse covers more ground than a bigger horse despite that looking unlikely when simply stood up and 'judged'. It's a fascinating subject and as with many things with racehorses, there are seemingly no rules.

Heights of a few famous racehorses:

ZENYATTA (dual Breeders Cup Classic winner) - 17.2hh
SECRETARIAT (1973 Triple Crown winner) - 16.2hh
HYPERION (Derby and St Leger winner) - 15.1hh
RED RUM (three-time Grand National winner) - 16.2hh
FRANKEL (ten-time Group 1 winner) - 16.1hh
MILL REEF (Derby and Prix de L'Arc de Triomphe winner) - 15.2hh