Detective Sergeant Hannah Wright, of North Yorkshire Police said:
"If you witnessed the robbery or can help identify either of the people involved I urge you to come forward and contact the police or Crimestoppers straight away.
"I am particularly keen to speak to anyone who may have seen the two suspects after they left the store or saw anyone acting suspiciously prior to the robbery."
More top news
The trophy started at Hadrian's Wall before passing through Hexham and Newcastle on its way to Alnwick.
Andrew Pullan's canoe capsized and he was pulled under the water near Barnard Castle in October 2013.
298 people were killed in the atrocity including Newcastle United fans Liam Sweeney & John Alder.