The sprint hurdles at the Summer Olympics have been contested over a variety of distances at the multi-sport event.
 The men's 110 metres hurdles has been present on the Olympic athletics programme since the first edition in 1896.
 A men's 200 metres hurdles was also briefly held, from 1900 to 1904.
 The first women's sprint hurdling event was added to the programme at the 1932 Olympics in the form of the 80 metres hurdles.
 At the 1972 Games the women's distance was extended to the 100 metres hurdles, which is the current international standard.
Arnaldo Bristol (born 11 September 1945) is a Puerto Rican hurdler.
 He competed in the 110 metres hurdles at the 1964, 1968, 1972 and the 1976 Summer Olympics.
 He won a bronze medal in the 110 metres hurdles at the 1975 Pan American Games and a silver in the same event at the 1971 Pan American Games.
The 110 metres hurdles, or 110-meter hurdles, is a hurdling track and field event for men.
 It is included in the athletics programme at the Summer Olympic Games.
 The female counterpart is the 100 metres hurdles.
 As part of a racing event, ten hurdles of 1.067 metres (3.5 ft or 42 inches) in height are evenly spaced along a straight course of 110 metres.
 They are positioned so that they will fall over if bumped into by the runner.
 Fallen hurdles do not carry a fixed time penalty for the runners, but they have a significant pull-over weight which slows down the run.
 Like the 100 metres sprint, the 110 metres hurdles begins in the starting blocks.
Welington Zaza (born 20 January 1995) is a Liberian hurdler who specialises in the 110 metres hurdles and the 400 metres hurdles.
 Zaza is the African junior record holder in the 110 metres hurdles.
 He broke that record at the 2014 World Junior Championships in Athletics.
 He has also competed at a World Championships.
Jhoanis Carlos Portilla (born 24 July 1990) is a Cuban hurdler.
 He competed in the 110 metres hurdles event at the 2015 World Championships in Beijing reaching the semifinals.
 His personal bests are 13.30 seconds in the 110 metres hurdles (+0.8 m/s, Toronto 2015) and 7.74 seconds in the 60 metres hurdles (Sopot 2014).
Omar McLeod (born 25 April 1994) is a Jamaican hurdler.
 He is the current 110m hurdle Olympic and World champion.
 He was NCAA indoor champion in the 60 metres hurdles in 2014 and 2015 and outdoor champion in the 110 metres hurdles in 2015; he turned professional after the 2015 collegiate season, forgoing his two remaining years of collegiate eligibility.
 His personal best in the 110 metres hurdles (12.90 seconds) ranks him 5th on the world all-time list.
Antonio Alkana (born 12 April 1990) is a South African hurdler.
 He competed in the 110 metres hurdles event at the 2015 World Championships in Beijing narrowly missing the semifinals.
 In addition, he won the gold at the 2015 African Games.
 His personal bests are 13.11 seconds in the 110 metres hurdles (+1.8 m/s, Prague 2017) which is the African record and 7.76 seconds in the 60 metres hurdles (Portland 2016).
Kjellfred Weum (30 July 1940, Hafslo – 7 August 2017) was a Norwegian hurdler.
The 100 metres hurdles, or 100-meter hurdles, is a track and field event run mainly by women (the male counterpart is the 110 metres hurdles).
 For the race, ten hurdles of a height of 83.8 cm are placed along a straight course of 100 m .
 The first hurdle is placed after a run-up of 13 metres from the starting line.
 The next 9 hurdles are set at a distance of 8.5 metres from each other, and the home stretch from the last hurdle to the finish line is 10.5 metres long.
 The hurdles are set up so that they will fall over if bumped into by the runner, but weighted so this is disadvantageous.
 Fallen hurdles do not count against runners provided that they do not run into them on purpose.
 Like the 100 metres sprint, the 100 m hurdles begins with athletes in starting blocks.
Alexis Sánchez González (born 13 April 1971) is a retired Spanish athlete who specialised in the 110 metres hurdles and 400 metres hurdles.
 Before Spain he represented his native Cuba, competing at the 1991 World Championships where he reached the semifinals.
 He was also the 110 metres hurdles World Junior Championships silver medalist in 1990.

Question: What event are Kjellfred Weum and 110 metres hurdles both names synonymous with?
Answer: hurdling track and field event