Thousands of spectators are expected to turn out for the 2017 Tour de Yorkshire race which get under way later.
The cycle race coverings 304 miles( 490 km) split into three stages.
The event, in its third year, began as part of the legacy of the county hosting the 2014 Grand Depart for the Tour de France.
The men’s race starts afterward in Bridlington, East Yorkshire subsequently and aims on Sunday at Fox Valley in Sheffield.
The women’s race starts in Tadcaster and ends in Harrogate on Saturday.
The race is organized by Welcome to Yorkshire, the region’s tourism bureau, and French company Amaury Sports Organisation( ASO ), which organises the Tour de France and other prestigious races in the European calendar.
Welcome to Yorkshire said the 2016 race attracted about a million spectators, produced about 60 m for the local economy and was watched by 11.4 million TV viewers in 178 countries.