The ACT Brumbies were mobbed by thousands of fans who turned out today to thank Australia's first Super 12 champions for providing the "greatest night in Canberra sporting history".

Around 3,000 people crammed into the capital's Civic Square and roared approval as ACT Chief Minister Gary Humphries announced part of the city heartland would be renamed Brumbies Walk.

"You're the best of the best," Mr Humphries said following the 36-6 weekend win over South Africa's Sharks.

"You've dazzled us."

Handing an ACT shield to Brumbies skipper George Gregan, Mr Humphries said in winning the world's toughest provincial rugby title, the team had proved it could match it with the world's best.

The Brumbies were snowed in streamers as they made their way with the newly-engraved Super 12 trophy past hordes of school children anxious for autographs.

Gregan said the naming of the walk after the team and a series of bronze plaques commemorating their achievements was the ultimate honour.

"Hopefully we can make this an annual event," the 61-Test veteran halfback said, already looking ahead to next year's Super 12.

Gregan and high-profile teammates like Wallaby wing Joe Roff, who will leave the team next year for a 12-month French sabbatical, then embarked on a wrist-aching round of autograph signings.

Roff said the reception was the warmest he had experienced.

"It's going to be a very special memory for me and I couldn't ask for a better way to be on a leaving note," he told AAP.

"(Biarritz) will be a completely different change of scene I'm sure, but good in its own respect and hopefully, who knows, one day I might be back."

Beaming coach Eddie Jones, who is widely expected to leave the Brumbies to take over the Wallaby helm next year, said the turnout was typical of the tremendous support the team had received all season.

He also had a gentle dig at Sharks skipper Mark Andrews, who has railed against the "boorish" behaviour of the Canberra crowd in victory.

"Anyone who has been to South Africa, anyone who has been to New Zealand, knows that the good teams have just as enthusiastic a following as we've got in Canberra," he said.

"I think Mark would probably like to review those comments with a little bit less emotion."

The Brumbies were also treated to afternoon tea with Governor-General Sir William Deane at Government House before holding their team presentation dinner at Parliament House tonight. (AAP)