Brimin Kipruto specialises in the 3000M steeplechase. He won a silver medal at the 2004 Summer Olympics at the age of nineteen and improved to win the gold medal at the 2008 Beijing Olympics four years later. A World Championships bronze medalist in 2005, he took his first global title in the steeplechase with a win at the 2007 World Championships in Athletics.
At the 2001 World Youth Championships in Athletics in Debrecen, Hungary he finished second. The same year he competed at the African Junior Championships in Cameroon and took silver again. At the 2004 World Junior Championships in Athletics he competed in 1500M instead of steeplechase and finished third.
In 2004, the young Kipruto won the silver medal at the Olympic Games and a bronze medal in the 2005 World Championships in Helsinki, both in the 3000M steeplechase. He finished third once more at the 2005 IAAF World Athletics Final and sixth at the same event in2006, repeating his place from 2004.
In 2007, he won the gold medal in the steeplechase at the World Championships in Osaka and a gold medal at the 2008 Beijing Olympics.
He also competed in the short race at the Great Edinburgh Cross Country and finished in third place