"Once I knew it was not just coincidence after he kept aiming it at us and obviously not a view behind us I said in a loud voice to my friend, 'That guy is following us', and he immediately turned and started walking the other way."
She said the man had not asked permission to photograph her and her friend and had felt "a little violated".
The women were at the summit for about 40 minutes before heading back down.
"By this time it was getting dark," she said. "We went back down the front way to the first set of stairs, and there was the guy standing there at the top of the stairs looking at us."
She said the man watched the women pass him and she had begun feeling "creeped out". When she turned around, the man was following them.
"I started to panic a little but did not want to freak my mate out, so I said to her, 'Let's jog down this time'."
The pair stopped to warn another female friend who was on her way up to the summit alone.
"We warned her about the guy and what he looked like, and then we kept going to the bottom with no sign of him after that," she said.
"It played on my mind all night about the safety of other women going up especially alone, so I called Tauranga police station the next morning to report it."
A police media spokeswoman said police were making inquiries into the incident and encourage anyone who may have experienced something similar on the Mount on Wednesday night to contact police.
Police encourage anyone who becomes concerned for their safety to contact 111 immediately.