Craig the husky, guided by owner Jordan Taylor, completed the trek on Saturday, raising more than US$6000 for the Amani Children's Home in Tanzania.

Mr Taylor said he volunteered at the orphanage a few years ago and felt inspired to raise funds for the organisation as COVID-19 dried up donations.

"A lot of people and organisations are struggling this year and I didn't feel like taking a holiday and we can't really go anywhere, anyway," Mr Taylor said.

"I felt like I was in a relatively fortunate position this year.

"My job was safe and secure and I wanted to figure out a way to help out people in a less fortunate position.

"It was a great way to go see the countryside as well, and exercise my legs a bit, which you don't get to do too much in the office, and try to get my dog finally tired ... but that's proven difficult."

Before embarking on on the walk, the duo completed a few 40km training walks. Craig and Jordan paced themselves throughout the walk, travelling 20-40km each day, depending on the distance between accommodation.

The pair used Google maps to navigate their way.

"We've been avoiding the highways, there's a lot of broken glass on the sides and it's not very fun," Mr Taylor said.

"So we've gone through country back roads and the dirt roads along the railway tracks."

Craig also trialled a few accessories along the way to protect his paws.

"I got him some shoes for the walk but he was falling over his feet," Mr Taylor said.

"So, I've been buying toddler socks from KMart, they give him a bit more padding and support his feet a bit more."

The huge walk was also a way to bond with his four-legged friend. "We've definitely had our moments where he's annoyed me and I've probably annoyed him, but you build a pretty close bond walking 350km with your dog," Mr Taylor said.

"Craig sees a lot of animals which he likes. Whenever he sees a rabbit he pulls me along. He's probably been pulling me for about 20 per cent of the way."

Craig and Mr Taylor were blown away by the support they received along the way.

This included a police officer who checked on them to see if Craig and Jordan were OK and a local who gave them access to a church hall in Bungendore to sleep one night.

"Some pubs have given us free meals and a seminary gave us a bed for a night," Mr Taylor said.

"The support that we've had from people along the way has been amazing."