Sir Chris Hoy has announced his retirement after an illustrious 18-year career. Here is a look back at his life and time on the bike...
Born Edinburgh on March 23.
Finishes 10th in BMX World Championships as an 11-year-old.
Finishes second in the coxless pairs at the British national rowing championships.
Wins silver in team sprint at European Championships and silver in same event at World Championships. Graduates in Sports Science from Moray House Institute, Edinburgh.
Wins silver in team sprint at Olympics in Sydney and at World Championships in Manchester.
Beats Olympic champion Jason Queally to win 1km time trial at Commonwealth Games in Manchester. Also wins bronze in team sprint. Wins gold in 1km and team sprint at World Championships.
Loses 1km title after finishing outside the medal places at the World Championships.
May: Wins 1km gold medal at World Championships.
August: wins 1km gold medal at the Olympic Games, setting sea-level world record with time of 1:00.711.
Wins gold in team sprint and bronze in 1km at World Championships.
Wins gold in team sprint and bronze in kilometre at Commonwealth Games.
Wins gold in 1km and silver in team sprint at World Championships.
Wins gold in keirin and 1km and silver in team sprint at World Championships. Falls short of 1km world record by 0.005 seconds in La Paz, Bolivia.
March: becomes first British cyclist in 54 years to win world sprint title at World Championships in Manchester. Also wins gold in keirin and silver in team sprint.
August 15: Wins Olympic gold in team sprint in Beijing along with Jamie Staff and Jason Kenny.
August 16: Wins gold in the men's keirin.
August 19: Wins another gold medal - his third of the Beijing Games - in the men's sprint, making him Britain's most successful Olympian at a single Olympics for 100 years.
December 14: Named BBC Sports Personality of the Year.
December 31: Awarded a knighthood in the Queen's New Year Honours List.
Suffers a hip injury during keirin final at Copenhagen World Cup, which forces him to miss World Championships in Pruszkow.
March: Wins 10th world title with keirin victory in Copenhagen. Also takes bronze in team sprint.
July: Announces intention to miss Commonwealth Games.
November: Third in team sprint at European Championships in Pruszkow.
Takes silver in three events at World Championships in Apeldoorn.
February: Wins sprint and keirin at London World Cup, an event that doubles as the Olympic test event.
April: Wins keirin world title in Melbourne. Claims bronze in the sprint after being beaten by Kenny in the semi-final.
August 2: Wins fifth Olympic gold medal in London 2012 men's team sprint bringing him level on golds with Sir Steve Redgrave.
August 7 : Wins the men's keirin at London 2012, his second gold of the Games and his sixth Olympic gold medal in total making him Britain's most successful Olympian.
April 15: Calls a media conference for April 18 in home city of Edinburgh, where he is expected to announce his retirement from competitive cycling.