Challow Novices' Hurdle was opened to older horses from the 1981/82 season onwards. After a hiatus during the mid 1990s, juvenile hurdlers are now excluded from the race. The 1999–00 and 2005–06 runnings took place at Cheltenham. Challow Novices' Hurdle The Challow Novices' Hurdle is a Grade 1 National Hunt hurdle race in Great Britain which is open to horses aged four years or older. It is run at Newbury over a distance of about 2 miles and 4½ furlongs , and during its running there are ten hurdles to be jumped. The race is for novice hurdlers, and it is scheduled to
100 metres hurdles run. From 1926 until 1968 on only the 80 m distance was run. For the 80 m race women had to clear eight hurdles placed at a distance of 8 metres from each other and a height of 76.2 cm. Just like with the men's races, until 1935 no more than three hurdles could be knocked over (or the runner was disqualified) and records were only officially registered if the runner had cleared all her hurdles clean. In 1935, this rule was abandoned, and L-shaped hurdles were introduced that fell over forward easily and greatly reduced the risk of injury