She told the Rotorua Daily Post the group started off small but grew, with one walk seeing 110 people make a trip to the Karangahake Gorge in two busloads and a van.
There were often big groups of 50 to 60 people at a time, she said.
Mrs Gordon said meeting the people, the camaraderie between them all and the things they used to do to raise money for their trips were aspects she had really enjoyed.
"It was really a lot of fun."
She and her husband would go out in the weekends to make sure trails were okay and would clear them, she said.
The group is still going today under another leader but due to having had spinal surgery Mrs Gordon is unable to join them.
"I really, really miss it and miss the people too," she said.
"In the end it became my thing. I think it kept me going.
"I'm 82 this year, I think I've done pretty well."
Mrs Gordon said she was looking forward to the reunion, and was hoping to see people she had not seen in a while.
"I'll go to that, I have to be there."
The bring-your-own picnic lunch reunion is being held on Friday, February 26, at the Rotunda in the Government Gardens and will begin between 11.30am and 12pm.
