Houvenaghel took part in a cycling time trial in September 2002, with no cycling experience and became the National Circuit Time Trial Champion the following year. She was selected for the GB National squad in 2003 to compete at the World Time Trial Championships in Canada. Prior to this, she had competed in time trials within the UK for the amateur club Camel Valley. She continued her collection of National time trial titles in 2004, going on to win all British time-trials that she competed in during 2005, and continued in her success throughout 2006. In October 2005, Houvenaghel won her first 3 km Individual Pursuit National Track title which was soon followed up by two World Cup wins, aged 31. Houvenaghel was talent spotted by British Cycling and after physiological testing was fast tracked onto the Olympic Podium Programme tasked with winning a medal at the Beijing Olympic Games within a 2-year time frame. Focusing on the track, she became the overall World Cup Champion in 2005/6 and made her GB World Track Championships debut in Bordeaux, ranking 5th. She competed for England on both the track and the road at the Commonwealth Games after being turned down for the Northern Ireland team by the British Cycling Federation. She retained her 3 km Individual Pursuit National title in 2006, and World Cup Champions title in 2006/7. She went one better to finish fourth in the 2007 World Championships, the following year in Majorca. Just prior to 2008 season, Houvenaghel declared that her focus would be on the 3 km Pursuit Track World Championships and 2008 Olympic Games. During the Track World Championships in Manchester, after inconsistent winter training, she was a part of the gold medal winning women's Team Pursuit. Having also set a personal best, ranking 4th in the Individual Pursuit, her potential to participate successfully at the Olympic Games was evident. On 15 August 2008 Houvenaghel qualified fastest in the qualification round of the Women's 3000m pursuit at the Beijing Olympics and went on to win the silver medal in the final, losing out on the gold to her team mate by 2 seconds. She won silver again in the same event at the 2009 Track World Championships in Poland, losing the final by 2 seconds after beating her opponent in the qualifying heats. She retained her World Championship title in the Women's Team Pursuit by qualifying fastest during the qualification ride and winning the final. The Individual Pursuit was not included in the Olympic Games in London in 2012, a decision which was ratified by the IOC and UCI mid December 2009. Having become the World Championship and Commonwealth Games Silver Medallist in 2010, the Individual Pursuit National Champion turned her focus and attention to the Team Pursuit Olympic event for the 2010/11 and 2011/12 track seasons. Houvenaghel was a member of the British Team Pursuit team that won the European and World Championship Titles in the 2010/11 track season, finishing the season ranked as World Number One in the UCI World rankings in Dec 2011. Houvenaghel's 2011 World Championship title took her total to three in the discipline of Team Pursuiting. Despite being a pivotal member of the Team Pursuit Olympic Qualification campaign, Houvenaghel was omitted from selection for racing this event at both the 2012 World Championships in Melbourne and Olympic Games in London. She was however, permitted to race the Individual Pursuit in Melbourne, earning a silver medal. Houvenaghel had her most successful road campaign in 2012 winning her 4th British National Time Trial title as well as winning the Celtic Chrono and Chrono Champenois International Time Trials. Her performances on the road warranted her selection to compete at the Road World Championships in the Netherlands. Houvenaghel announced her retirement from the sport on the eve of the 2014 Commonwealth Games after sustaining a back injury in training, forcing her to withdraw from the competition. Houvenaghel won three World Championships competing for Great Britain in the Team Pursuit event and an Olympic silver medal in 2008 in Beijing in the Individual Pursuit. She was also a multiple European and National Champion. In 2017 Houvenaghel had accused British Cycling of ageism and 'win-at-all-cost' culture.
