The 57-year-old woman was walking along Willerby Road close to Springhead Park Golf Club in Hull when the thief struck on Tuesday March 29 at around 4.25pm.
The rider grabbed the woman’s handbag from her shoulder as he passed from behind and then rode off across Springhead Park Golf Club.
The victim was not injured but her black leather handbag, containing a gold coloured purse and credit cards, was stolen.
The thief was described as a man wearing a black jacket with the hood up. He was riding a dark-coloured pedal cycle.
Anyone who witnessed the incident should call 101, quoting crime reference number 2178198, or Crimestoppers anonymously on 0800 555111.