did not register a significant result. A few weeks after leaving Team Sky, Wiggins said he felt "liberated" and "happier". On 7 June 2015 Wiggins broke the hour record, riding , surpassing Dowsett's mark of , set five weeks earlier, by more than 3%. On 16 August, Wiggins joined Cavendish on the track for the first time since the 2008 Olympics, winning the Madison in the first round of the Revolution cycling series at the newly opened Derby Velodrome. In October Wiggins took his first gold medal at the European track championships when he was part of the British squad that won the team pursuit. 2016: Fifth Olympic gold and retirement Wiggins competed at the world championships in London, where he took two medals: in the team pursuit, he was part of the British squad that qualified for the final, where they took the silver behind Australia despite leading with 500 metres to go and going on to set the fastest time in competition by a British quartet since 2012. However Wiggins said that he was happy with his performance, stating "that (was) the strongest I've been in a team pursuit, so there's a bit of life left in me yet, and I've got another four or five months to get a bit better". Subsequently, he raced with Cavendish in the madison, where they clinched their second world title in the discipline as a pairing using similar tactics to their 2008 win: accumulating points in the sprints in the early stages of the race, before making up a one lap deficit on their French, Colombian and Swiss rivals by working with the Spanish pairing of Sebastián Mora and Albert Torres in a breakaway, taking the lead and holding on for the win despite Cavendish crashing with 11 laps to go. Through the spring of 2016 Wiggins focused on training for the Olympics, limiting his road racing to a small number of events, finishing low down the placings in all of them. As part of a five-man squad for the team pursuit, Wiggins was reported to be breaking world records in Olympic training, despite apparent disagreements between Wiggins and Cavendish, who was nominated as the squad's fifth rider in order to allow him to enter the omnium at the games. The team pursuit squad achieved the fastest time in qualification for the tournament, before reaching the final with a world record