The Grampians Bushwalking Club says visitors to the tourist attraction needed to be prepared and know their limitations, following the death of a tourist at MacKenzie Falls earlier this week.
The 28-year-old from NSW's South Coast was with a tour group when he collapsed and died while climbing back up the stairs between the falls and the car park at Zumsteins at 3.45pm on Monday.
It followed a 27-year-old man from New Zealand drowning in a rock pool at the falls on Boxing Day 2018.
Club secretary Greg Dryburgh said people needed to take into account how fit they were before walking.
"When we do walks we rate them for difficulty, but it's hard to work out how difficult a walk will be if someone is unfit," he said.
"We often get members who don't know what to expect and don't want to walk by themselves."
Mr Dryburgh said he didn't believe the number of people getting into trouble in the Grampians had been increasing, but that the community was hearing more about the people that did. He said people needed to train on similar terrain to be fit to walk the region's tracks.
"You can walk for five kilometres around town, but that same five kilometres will be completely different in the Grampians," he said.
Mr Dryburgh said people needed to be adequately prepared for their chosen walk, which included lots of water on hot days and protection on cold, wet ones.
"Start early too. We see people starting late which is a big problem because either they don't finish or they get lost. If you feel you can't make it, don't go," he said.
Grampians Bushwalking Club has 16 members from across Ararat, Stawell, Halls Gap and Bendigo. It celebrates its 25th anniversary this year.
Parks Victoria district manager Gavan Mathieson said his organisation had worked with emergency services to improve safety awareness to visitors and increase safety signage around Grampians National Park.
"Visitors should check park conditions including information on walks at www.parks.vic.gov.au or stop in and speak to a Park Ranger at our Halls Gap Office for tips and information," he said.
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