The motorcycle passenger who died while taking part in the Pike River Memorial Run was Jayne Jamieson.
Police are still investigating the events that lead up to the fatal crash on the West Coast.
The crash occurred on State Highway 6, about 1km towards Reefton from Berlins Café and Bar, about 3.55pm on Saturday.
Jamieson, 52, from Inangahua, was a passenger on the bike and died at the scene.
A police spokesperson said they would like to speak to anyone who was at or outside Berlins between 3.30pm and 4pm on Saturday.