After ten days off his bike, Simpson was only contracted to three post-Tour criteriums. His training for the road world championships included kermesse circuit races in Flanders. Simpson's last race before the world championships was the Paris–Luxembourg stage race, riding as a super-"domestique" (lieutenant). On 5 September, Simpson rode in the road race at the world championships in San Sebastián, Spain. The race was a hilly circuit of fourteen laps. The British team had no support; Simpson and his friend Albert Beurick obtained food and drink by stealing from other teams. During the first lap, a strong break was begun by British rider Barry Hoban. As his lead stretched to one minute, Simpson and teammates Vin Denson and Alan Ramsbottom bridged the gap, followed by Germany's Rudi Altig. Hoban kept the pace high enough to prevent any of the favourites from joining. Simpson and Altig broke clear with two-and-a-half laps remaining, staying together until the final kilometre, when Simpson launched his sprint; he held off Altig for victory by three bike lengths, becoming the first British world road race champion.