A cold and exhausted 65-year-old Russian balloonist came back to Earth with a bruising thud in the Australian Outback on Saturday after claiming a new world record by flying solo around the world nonstop in 11 days, officials said.

Fedor Konyukhov landed 160 kilometres east of Northam, where he started his journey on July 12, about three hours after he flew over the same town on his return, flight co-ordinator John Wallington said.

"He's landed, he's safe, he's sound, he's happy," Wallington said from the landing site. "It's just amazing."

"It's fantastic — the record's broken, everyone's safe. It's all good," he added.

Konyukhov's gondola — a carbon box 2 metres high, 2 metres long and 1.8 metres wide — bounced twice over 200 metres in an empty field and tipped on its side before the support crew grabbed it to prevent the deflating balloon from dragging it farther, crew member Steve Griffin said.

"He's got a bruise on his cheek, but he's pretty well unscathed," Griffin said.

Fedor Konyukhov stands by his helium and hot air balloon as it is inflated before liftoff on Monday, July 11, 2016. The Russian adventurer returned to Australia Saturday morning after an 11-day, around-the-world solo flight. (Handout/Oscar Konyukhov/Morton via Associated Press)

Video of the landing showed Konyukhov smiling but silent as he emerged from the gondola. He stroked his bearded left cheek and wiped his eyes as he was hugged and cheered by supporters.

Konyukhov flew by helicopter back to Northam, where his first shower in 11 days was a priority, Griffin said.

Konyukhov demonstrated precision navigation of his 56-metre-tall helium and hot air balloon by returning to Australia directly over the west coast city of Perth, then over the airfield at Northam, 96 kilometres to the east by road.

American businessman Steve Fossett also started from Northam to set a record of 13 days, 8 hours for his 33,000-kilometre journey in 2002.

Konyukhov, a Russian Orthodox priest, took a longer route and roughly 11 days, 6 hours to complete the circumnavigation.

Thunderstorms and no heat

His journey of more than 34,000 kilometres took him through a thunder storm in the Antarctic Circle, where temperatures outside the gondola fell to minus-50 degrees Celsius.

The gondola heating stopped working on Thursday, so Konyukhov had to thaw his drinking water with the balloon's main hot air burner, Wallington said.

The journey also took him to speeds up to 240 kilometres per hour and heights up to 10,614 metres before he released helium to prevent the balloon from continually climbing as its fuel load lightened, Konyukhov's son Oscar said.

Fedor Konyukhov floats at more than 6,000 metres above an area close to Northam, in Western Australia, in this handout photo. The 65-year-old was battling sleep deprivation, freezing temperatures and ice in his oxygen mask as he neared the end of his record attempt to fly solo around the world nonstop. (Oscar Konyukhov/Morton via Associated Press)

Konyukhov aimed to get four hours of sleep a day in naps of 30 or 40 minutes between hours of checking and maintaining equipment and instruments.

He used a bucket for a toilet and emptied it over the side.

Konyukhov's team had said that landing the balloon could be the most challenging and dangerous part of the journey.

Fossett, who was 58 at the time of his journey, was forced by strong winds to spend more than a day in the air after setting his own record as the first person to circle the globe in a balloon. His capsule tumbled along the ground for 15 minutes after he landed on a cattle ranch in Australia's Queensland state. He emerged from the capsule with a bloodied mouth from biting his lip during the rough landing, but was otherwise unhurt.

The Swiss-based World Air Sports Federation did not immediately respond to a request for confirmation of the new record.