Mike Rasmussen, who is based in Aboyne, signed up for the arduous challenge across the snowy Scandinavian landscape last year to raise money for the Blue Cross animal charity.
He was joined by 15 teams on the six-day journey, which saw them travel from Golgojarvi in Lapp, Norway, through the stunning Isdolen Ice Valley and on in to Sweden, across the Vosko plateau and down on to the frozen lake north of Galena.
Covering around 45 miles a day - nine hours at a time - with temperatures plummeting to as low as -18C at night, Mr Rasmussen described it as the "most challenging and emotional expedition" of his life.
Ahead of the first day of the charity venture, the teams stayed in a traditional Lapp house - similar to an American Indian teepee - where they enjoyed reindeer stew before wrapping themselves in reindeer skins to keep them warm through the night.
The following morning they awoke to 30cm of fresh snow before setting off with their sleds, laden with 220 kilos of food and equipment, across the remote and unspoilt landscape which is populated by wolf packs, brown bear, and reindeer.
Inexperience, however, took its toll on the group as they made a steep descent down the ice valley. Many teams experienced some form of crash, including Mr Rasmussen who became separated from his dogs when the sled capsized. But the dogs only ran for around quarter of a mile before the ice hook finally brought them to a halt.
The architect, who has already signed up for next year's Arctic Challenge, organised by Global Adventure Challenges, and who is also considering scaling the heights of Africa's highest mountain, Kilimanjaro, said: "Northern Norway and Sweden, known as Lapland, is the only true wilderness left in Europe and as such it was a humbling experience to test my mental and physical stamina in this extreme climate."
But he stressed it was the emotional and spiritual aspect which was the most challenging. "None of us were prepared for it or expected it," he said.
"Because it was so remote and beautiful, particularly going across the frozen lakes in Sweden you started to have time to think about your life and what's going on in the world."
The hardest part of the journey at the end, however, he said was saying goodbye to his team of dogs, four of which competed in the 2006 Iditarod in Alaska - the world's longest and toughest sled race at 1,250 miles.
Mr Rasmussen stressed that all 96 dogs on the challenge were always the first to be fed and watered - a task which took two hours.
"The dogs were magnificent," he added. "I had six Alaskan huskies (crossbreed Siberians] pulling me and a sled loaded with all their and my food and kit for six days. The loaded sled came to about 220 kilos and the dogs pulled it as if the sled was empty.
"These little dogs were so friendly and tough and fresh at the end of nine hours on the trail as they were at the start. They can look very fierce but they were very affectionate."
Mr Rasmussen hopes to raise £5,000 for the Blue Cross animal charity and is still accepting donations to his office, Michael Rasmussen Architects, in Aboyne.