Watch live coverage of the 2017 HSBC UK | National Circuit Championships on this page or on British Cycling's Facebook page from 6.15pm on Wednesday 19 July in Sheffield.
As one of the pinnacle events on Britain’s elite road racing calendar, the championships are fiercely contested by the country’s top professional riders who will be battling it out for the honour of wearing the red, white and blue striped jersey of British national champion for the next 12 months.
Coverage starts at 6.15pm with racing getting under way at 6.30pm.
6.30pm: Women’s race start (50 minutes plus 5 laps)
8.00pm: Men’s race start (50 minutes plus 5 laps)
Win the ultimate cycling bundle - worth over £7000
The 1st prize bundle includes a Cervelo S5 with Dura Ace, a signed Great Britain Cycling Team jersey, a year's supply of SiS and Muc-Off, plus a Lazer Z1 helmet and glasses. The prize draw will close at midnight on Monday 24 July. Read the full terms and conditions here.