Brown is a 19-month-old maremma dog that escaped its owner's home in Hazlebrook and she's been on the road ever since.

For four long months Brown has been making her way west through the Blue Mountains, the Lithgow region, Sunny Corner, Bathurst and she was last seen on Friday morning in Blayney.

If you drove the journey, it's around 203 kilometres.

Up until April 22, Brown had lived on a farm - she'd had little contact with people and had never been on a lead or in a kennel.

Traditionally, Maremmas are used to guard livestock on farms. They are tough and familiar with being on their own.

Following Brown's disappearance her owner, Carol Bertram, shared missing dog reports on Facebook pages and started a group chat calling on anyone who had seen her dog to let her know.

Ms Bertram said while Brown may be a survivor, her dog is scared and has been acting skittish in videos taken by community members who've spotted the missing canine.

The first time anyone spotted Brown after she went missing was a month later in Wentworth Falls and despite attempts to feed her and gain her confidence she fled.

"There's been sightings ever since, but no close contacts," Ms Bertram said.

Brown was next spotted at Mount Victoria, before then being seen in Lithgow and then Cullen Bullen on July 23.

Reported sightings were then made in Ben Bullen, Portland, Sunny Corner, Bathurst, Kings Plains (on July 27) and Blayney.

Brown was first spotted in Blayney on Monday.

"We've got photos and videos of her in Blayney. It's definitely her," Ms Bertram said.

"On Wednesday night we got about 20 to 30 calls of sightings in Blayney."

On Thursday, attempts were made to dart her, but she got away.

Ms Bertram said she is not surprised that Brown has lasted for four months on her own, but she is astonished that her dog has stayed safe from traffic and fox baits through areas she's travelled.

"Baiting and car-wise, yes it's just insane that she's survived," she said.

She said it was crucial that anyone who sees Brown does not to chase her or attempt to catch her.

Brown is the size of a German shepherd and is white in colour.

If you see Brown call: