Mark David Hylton (born 24 September 1976) is a former British 400 metres sprinter. Hylton won a silver medal in the relay at the 1996 Summer Olympics in Atlanta.

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Mark Hylton

Personal information
Nationality	English
Born	(1976-09-24) 24 September 1976 (age 47) Slough, Berkshire)
Sport
Sport	Athletics
Medal record Men's athletics Representing  Great Britain Olympic Games 1996 Atlanta 4×400 m relay World Indoor Championships 2003 Birmingham 4x400 m relay Representing  England Commonwealth Games 1998 Kuala Lumpur 4x400m relay 2002 Manchester 4x400m relay IAAF World Cup 1998 Johannesburg 4x400 m relay

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Throughout his career, Hylton represented Windsor, Slough, Eton and Hounslow Athletic Club.

In 1991, he won the English Schools' Junior 200 metres title by 1/100 of a second from Jamie Sykes of South Yorkshire.^[1] He also competed in and won the Schools International Athletic Board (SIAB) indoor 200 metres, for England.^[2]

In 1993, he won the English Schools' Intermediate 400 metres title.^[1] He also went on to win the SIAB 400 metres title.^[3] Also this year he won the AAA U17 400 metres title, both indoors and outdoors.^[4][5]

In 1994, he won the English Schools' Senior 400 metres title.^[1] He also won a bronze medal as part of a British 4 x 400 metres relay team at the World Junior Championships.^[6] Also this year he won the AAA U20 400 metres title.^[5]

In 1995, he won the AAA U20 Indoor Championships 200 metres and AAA Indoor Championships 400 metres, breaking the British indoor record in the latter with a time of 46.56 seconds.^[4][7][8] Outdoors, he won the AAA U20 Championships 200 metres and he came second at the AAA Championships over 400 metres.^[5][9] He then went on to win the European Junior Championships over the same distance.^[10][11][12] At the same European Championships he also won the 4 x 400 metres relay title.^[13][14][15] Later in the season he raced as part of the British team that finished fourth in the 4 x 400 metres relay at the World Championships.^[16][17] Also this year he retained his English Schools' Senior 400 metres title.^[1]

In 1996, he raced as part of the British team that won a silver medal in the 4 x 400 metres relay at the Olympic Games.^[18] He only raced in the heats, but still received a medal. He also won the Scottish Championships 400 metres that year, as an international competitor.^[19] This year he also retained his AAA indoor 400 metres title.^[8]

In 1997, he competed at the World Championships in the 4 x 400 metres relay as part of the British team that originally finished second but were upgraded to gold as a result of the disqualification of the US team. He only raced in the heats, but still received a medal.^[20][21] He also won the inaugural European U23 Championships 400 metres title.^{[22][23][24][25][26]} This year he won his third and final AAA indoor 400 metres title.^[8]

In 1998, he competed at the European Championships as part of the British team in the 4 x 400 metres relay, winning a gold medal.^[27][28][29] Later in the year he represented England in the Commonwealth Games in the 4 x 400 metres relay, winning silver.^[30] He won a silver medal over 400 metres at the AAA Indoor Championships.^[8]

In 1999, he raced as part of the British team in the 4 x 400 metres relay at the World Championships, failing to qualify for the final.^[31] He came third outdoors over 400m at the AAA Championships.^[9] He won a bronze medal over 400 metres at the AAA Indoor Championships.^[8]

He tested positive for nandrolone in 1999, but a two-year ban was overturned following an appeal which revealed errors in the testing of his sample. One aspect of the test showed a level of nandrolone at three nanograms per millilitre (one nanogram above the maximum limit), but flaws in other aspects saw the ban dismissed due to reasonable doubt.^[32]

In 2001, he competed in the 4 x 400 metres relay at the World Indoor Championships for Great Britain, finishing fourth in the final.^[33] That year he also competed in the 4 x 400 metres relay at the World Championships, racing only in the heats.^[34] He also won the Scottish Championships 200 metres that year, as an international competitor.^[19][35] He came third outdoors over 400 metres at the AAA Championships.^[9] He won the South of England 400 metres title.^[36]

In 2002, he raced for England in the heats of the 4 x 400 metres relay as part of the team that won gold at the Commonwealth Games.^[30]

In 2003, he competed in the 4 x 400 metres relay as part of the British team that won silver at the World Indoor Championships for Great Britain. He only raced in the heats, but still received a medal.^[37][38]