The UCI Road World Championships consist of events for road race, individual time trail and Team Time Trials.
All the world championship events, except team time trials from, are ridden by national teams, not trade teams such as in most other major races.
The winner of each category is entitled to wear the rainbow jersey in races of that category (either mass start or time trial) until the next championships.
People will watch the race on television.
Male and female riders will take part
What races are there?
There are 12 races in total, which are as follows:
Elite Men's road race
Elite Men's time trial
Men's team time trial
Under-23 Men's road race
Under-23 Men's time trial
Junior Men's road race
Junior Men's time trial
Elite Women's road race
Elite Women's time trial
Women's team time trial
Junior Women's road race
Junior Women's time trial
The world championship and two of the three Grand Tours (namely the Giro d'Italia and the Tour de France) form the Triple Crown of Cycling.
Organisers Welcome to Yorkshire say that the Championships will visit all four corners of the county.
The bid is backed by the government who have promised a pot of gold at the end of the race for the rainbow jersey with a £15m pound pledge for future cycling infrastucture.