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 hurdles with a height of 76.2 cm. During the 1968 Summer Olympics, a decision was made to introduce the 100 m hurdles using hurdles with a height of 84 cm. The first international event in the 100 m hurdles occurred at the European Athletics Championships, which were won by Karin Balzer, GDR. The modern 100 m race has an extra 2 hurdles compared to the 80 m race, which are higher and spaced slightly further apart. The home stretch is shorter by 1.5 m. A version of the 100 metres hurdles is also used for 50- to 59-year-old men in