The Tour de France will be first of major three week races this year. It will start on August 29. While the Giro is scheduled to take place from October 3 and Vuelta will start on Oct 20. Giro d'Italia and Vuelta a España will overlap in October for few stages. And will be shortened to 18 stages and will finish in mid of November.
Another anticipated race will be Road World Championships from September 20th until September 27. The host will be Aigle-Martigny in Switzerland.

List of active 2020 cycling road races: