Geraint Howell Thomas, MBE (born 25th May 1986) is a Welsh professional racing cyclist who rides for the UCI ProTour team Team Sky. He is a multiple track cycling world champion and Olympic gold medalist in the team pursuit.
Thomas, from Whitchurch, Cardiff, attended Whitchurch High School. He began cycling with the Maindy Flyers Cycling Club at Maindy Stadium at the age of 10, before going on to ride for other local clubs, Cycling Club Cardiff and Cardiff Just in Front. Following some successes in under 14 and under 16 events, including National Championships, but it was not until he won a silver medal in the points race at the European Championships that he started to realise his potential. Thomas then became a member of British Cyclings Olympic Academy. He won the Carwyn James Junior Award at the BBC Wales Sports Personality of the Year ceremony. Thomas competed at World Cup events around the world, and was training in Sydney, Australia in February 2005 when he crashed after the rider in front of him hit a piece of metal in the road which was flicked up into Thomas' wheel. He suffered internal bleeding after the piece of metal entered his body during the fall, he ruptured his spleen which subsequently had to be removed.
He rode most of his races of 2006 for Recycling.co.uk, but towards the end of 2006 joined Saunier Duval-Prodir as a stagiare. He also rode a few races, such as the Tour of Britain, for the Great Britain squad.
Thomas was the youngest rider in the 2007 Tour de France as Team Barloworld picked up one of the three wildcard spots allocated for the race. He became the first Welsh rider to compete in the race since Colin Lewis in 1967, Thomas received great support from Welsh fans at the opening of the race, with several following the entire race. He completed his first Tour de France, finishing 140th of 141 finishers.
On 17 August, Thomas was a member of the Olympic team pursuit squad which broke the world record in the heats with a time of 3:55:202, beating their Russian opponents comfortably to go through to the final ride-off for silver and gold. The following day, on their way to winning the gold medal, the British Team pursuit broke their own world record in a time of 3:53:314, beating their Danish competitors by 6.7 seconds. Thomas had been a possible contender in the individual pursuit, but opted not to ride both events as he did not want to compromise the efforts of his team. He had also been considered to compete in the Madison with Bradley Wiggins but it was Mark Cavendish who was selected to do so; Chris Boardman stated that "Geraint keeps surpassing people's expectations".