Environmental impacts and access to water along the Grampians Peaks Trail were concerns raised at an information session in Halls Gap on Thursday.
The meeting was part of a series of feedback sessions being run by Parks Victoria, who this week announced new details and concept designs of 11 campsites along the 160km length trail.
Parks Victoria ranger, Matthew White, said construction had begun at the vehicle accessible campsites first so "constructors can refine the building process".
"That way constructors will be prepared for the helicopter sites where the stakes are higher," said Mr White.
Parks Victoria presented photos of raised timber tent pads at Cassidy Gap and rock steps at Mt Abrupt that are currently being constructed.
Jim and Dorothy Dhaeze, residents from Melbourne, said they have been watching the development of the trail over the past four years.
"We are from the Boroondara Bushwalking Club and we plan to hike the track in April next year ... it has been a dream of ours to hike all of the Grampians," said Mr Dhaeze.
He said his only concern was the water supply at the older campsites.
"I am happy with the new water tank designs, although some campsites have fairly small tanks. I have seen people come down from Borough Huts campground without having had any water," he said.
"An iconic world class trail like this needs proper water facilities."
Adrian Manikas, owner of local business Absolute Outdoors, said it's a "mammoth project" and he is hopeful that it will be completed by December.
"We are looking to be the premiere walking operator in the area, we have some higher end products that we have planned, we are pretty excited," said Mr Manikas.
"People are even excited to run the new trail ... 160 km is a magic number for trail runners because it equates to 100 miles. Event companies are already planning to offer trail runs."
Local environmental scientist Ant Mair said he had concerns about the environmental impacts of the trail. "This walk will change the way this place is used and as an environmental scientist my prime directive is to see this place better off than I left, he said.
"This trail will hopefully be used in a way for people to come and connect to the landscape ... That is the purpose of this place."
