SportgalleryEnd of an era: Sir Chris Hoy retires from cyclingBookmarkShareSportByWayne Porteous12:03, 18 APR 2013Updated11:45, 10 DEC 2014End of an era: Sir Chris Hoy announced his retirement from professional cycling on April 18, 2013 (Image: AFP)1 of 41BMX star: Chris Hoy kicked off his cycling career in BMX racing2 of 412002: An emotional Hoy on a warm-down lap in Denmark (Image: Getty)3 of 412004: Hoy in action during the 2004 Olympics in Athens (Image: Getty)4 of 412004: Chris Hoy rides during the men's 1 km time trial at the 2004 Olympic Games in (Image: Getty)5 of 412004: Chris Hoy receives his gold medal for the 1km time trial at the 2004 Olympic Games in Athens (Image: Getty)6 of 412007: Staying focused before the Keirin at the Track Cycling World Championships in Mallorca (Image: Getty)7 of 412007: Hoy cycles to take the gold in the Men's 1km time trial in Mallorca (Image: Getty)8 of 412007: Chris Hoy is comforted by his mother Carol after failing in his attempt to break the World 1 Kilometre Altitude Record in Bolivia (Image: Getty)9 of 412008: Working out in preparation for the Beijing Olympic Games (Image: Getty)10 of 412008: Hoy, Jason Kenny and Jamie Staff in action at the Beijing Olympics (Image: Getty)11 of 412008: Hoy celebrates his victory in the Olympic Men's Sprint Final in Beijing (Image: Getty)12 of 412008: Another Olympic gold medal for Hoy, this time in the men's sprint at the 2008 Olympics in Beijing (Image: Getty)13 of 412008: Chatting with Prince Edward during a training session14 of 412008: Parents Carol and David Hoy show off a banner supporting their son Chris at the World Championships (Image: Getty)15 of 412008: Parents Carol and David Hoy celebrate Hoy's World Championship victory in the men's sprint final (Image: Getty)16 of 412008: Hoy gets off his bike to celebrate with his family after winning the Men's Sprint final in the World Championships (Image: Getty)17 of 412008: Chris Hoy of Great Britain poses with the three gold medals he won in Beijing (Image: getty)18 of 412008: Named the BBC Sports Personality of the Year (Image: PA)19 of 412009: Arise Sir Chris. Hoy receives a Knighthood from the Prince of Wales in June 2009 (Image: Getty)20 of 412009: A battered and bruised Hoy walks back after crashing during the UCI Track World Cup (Image: Getty)21 of 412010: Hoy crashes out of the Keirin at the World Championship in Copenhagen (Image: Getty)22 of 412010: On his wedding day with wife Sarra (Image: PA)23 of 412012: Hoy carrying the Olympic Flame on the Torch Relay leg between Higher Broughton and Manchester (Image: PA)24 of 412012: Kitted out and ready for London 2012 (Image: adidas)25 of 412012: Hoy leads out Team GB as the flagbearer at the opening ceremony of the London 2012 Olympic Games (Image: Reuters)26 of 412012: Great Britain's Chris Hoy celebrates after winning the Men's team sprint gold final (Image: Getty)27 of 412012: Receiving the adulation of the fans after the world-record-breaking display in the Men's Team Final at London 2012 (Image: Getty)28 of 412012: Celebrating after setting a new world record and winning gold in the Men's Team Sprint Track Cycling final (Image: Cameron Spencer / Getty)29 of 412012: Celebrating after setting a new world record and winning gold in the Men's Team Sprint Track Cycling final (Image: Getty)30 of 412012: Sir Chris Hoy, Jason Kenny and Philip Hindes celebrate gold after setting a new world record in the Men's Team Sprint Track Cycling final at London 2012 (Image: Getty)31 of 412012: Celebrating with wife Sarra after winning gold in the Men's Team Sprint at London 2012 (Image: Bryn Lennon / Getty)32 of 412012: Hoy (red helmet) powers to victory in the Men's Keirin at London 2012 (Image: Getty)33 of 412012: Chris Hoy's winning moment as he crosses the line to win the Keirin at London 2012 (Image: Getty)34 of 412012: Photo finish from London 2012 as Chris Hoy wins the Men's Keirin at London 2012 (Image: Getty)35 of 412012: Hoy in familiar pose after claiming gold in the Men's Keirin at London 2012 (Image: PA)36 of 412012: Celebrating gold again after winning the Men's Keirin in the London 2012 Olympics (Image: GETTY)37 of 412012: Celebrating gold again after winning the Men's Keirin in the London 2012 Olympics (Image: Harry How)38 of 412012: Celebrating gold again after winning the Men's Keirin in the London 2012 Olympics (Image: Phil Walter)39 of 412012: Royal Mail stamp to celebrate Chris Hoy's Cycling Track Men's Keirin40 of 412012: Flying high in a Typhoon jet at RAF Leuchars (Image: PA)41 of 41