A bridge at Otaki Forks near where the man left his car.

Rescuers have resumed their search for a man who failed to return from tramping alone in Tararua Forest Park.

Ten search and Rescue teams from Palmerston North, Levin and Wellington were back out in the ranges from 7am on Saturday.

Rescue efforts began on Friday after the 67-year-old local failed to return from his three-day tramp.

He entered the park on Tuesday and headed for Kime Hut. He had planned to return to his car at Otaki Forks by 3:30pm on Thursday but never arrived.

He was expected to travel there from Elder Hut via Renata Ridge and Waiotaru Road and track.

A police spokesperson said the man was an experienced tramper, fit and well-prepared for a short stay.

"But police are growing more concerned for his safety as he hasn't been in contact since Tuesday and was tramping alone."

Police described him as caucasian, of a lean and tall build, and balding with short grey hair.

Police want to hear from anyone who has been in the Tararua Forest Park on Tuesday, Wednesday or Thursday this week, particularly around Kime Hut, Elder Hut and Otaki Forks.

Anyone with information should contact Palmerston North Police on (06) 351 2535.