Tour de France winner Bradley Wiggins has spent the morning in training at Box Hill in Surrey.
He was joined by Olympic Gold hopeful Mark Cavendish and GB team mates for several laps of the climb in the Surrey heat.
Mark Cavendish will lead Britain's charge for road race victory on Saturday before Wiggins goes for gold in the time trial on Wednesday.
Riders from nations including Australia, France, Austria, Canada, Belgium and China also trained on Box Hill, which is set to be key to the outcome of the race.
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After a dry start, sunshine will become increasingly hazy as cloud thickens, bringing patchy light rain to some parts.
After a dry and bright start across the region, sunshine will become increasingly hazy as cloud thickens.
Showers soon dying out this evening to give a dry night with some long clear spells and light winds.