Trampers are being advised to avoid walking trails in the Kaikoura and South Marlborough regions, but elsewhere most tracks and huts appear to have escaped damage from Monday's quake.
Department of Conservation deputy director-general of operations, Mike Slater, said it would be days before his staff could confirm the safety of tracks and huts in the worst-affected areas.
"Rockfalls and slips could still occur in the areas closest to the quake zone, especially with ongoing aftershocks and poor weather," he said.
"Visitors are advised to stay away from tracks in the Kaikoura and South Marlborough regions until they have been fully assessed."
"Caution is also urged on some tracks on the West Coast and North Canterbury, but the rest of the country is open and it is business as usual."
Visitors can check the DOC website for more information.