The cycle, which is a purple and turquoise, 2016, Avail Advanced Pro Racer road bike, was stolen from outside of Lidl, James Street, York at around 1.45pm on 18 December.
It has a serial number underneath the bike frame - F/N GK5M941.
The bike has distinctive purple taping around the handlebars.
If you see the stolen bike, are offered it for sale, or know where it is now, please email Megan.Elliott@northyorkshire.co.uk.
You can also call North Yorkshire Police on 101, select option 2, and ask for PC Elliott 316.
If you wish to remain anonymous, you can pass information to Crimestoppers on 0800 555 111.
Please quote the North Yorkshire Police reference number 12220223212.