Canberra Raiders mayhem hit new levels on Tuesday morning when more than 2000 mad Green Machine fans queued at the gates just to watch the players train.

The line snaked from the entry points around a corner, went past the AIS athletics track and edged closer to CIT as people waited for the gates to open.

The members-only event was a chance for the club's most dedicated supporters to farewell the team before they travel to Sydney on Wednesday.

The Raiders are playing in their first grand final in 25 years. They will meet the Sydney Roosters on Sunday night for a chance to end a premiership drought.

The Raiders have also been celebrating the 30th anniversary of their first premiership in 1989, and Raiders passion is as strong as ever.

Among the fans was Yvonne Debenham, who managed to get a few hugs from Raiders players like Josh Papalii.

She said she'd been supporting the team since their inception, and thinks they've got what it takes to replicate their last grand final win in 1994.

"They've worked very hard, and going back three years ago, I never would have thought they would get into the grand final," she said.

"Seeing the team now compared to 1989, there's shades of the old team there."

David Breen was there with his two sons, three-year-old Archie and five-year-old Luca, both wearing white headgear like Jarrod Croker.

"I've been a fan since I was the same age as my boys, and they've been fans since they've been able to walk," Mr Breen said.

"We've been to every home game this season, and we're off to the grand final this weekend."

More than 500 commemorative T-shirts marking the Raiders' grand final appearance had sold out, with any green-tinged merchandise quickly snapped up.

Fans even got the chance to blow on the Viking horn used to mark the start of the Viking clap.

There were huge roars from the crowd as the players came out to start, with some of the loudest reserved for coach Ricky Stuart.

The long line of fans at the training session was proof of support for the Green Machine, with some breaking into impromptu Viking claps, drumming and Raiders chants.

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Steven Catanzariti was another of the fans in the long line just to see the team in action.

He said fan support was crucial to get the side over the line in the final.

"We've been here through the drought, and we've been here through the glory, and we want to show our support before they head to Sydney," he said.

The club has invited supporters to line the streets around their Bruce headquarters on Wednesday as a final farewell to the players when they board the bus to move their base to Sydney.

Fans have been encouraged to gather near Battye Street from 10am on Wednesday for one last Viking clap in the capital before the game.

Plenty of fans have already made plans to make the trip up to Sydney to watch the big game.

Of the 20,000 tickets to the grand final sold over the weekend, an estimated 14,000 of them went to Raiders fans.

Canberra Ticketek proprietor Frog Harris said a sizeable crowd had queued up at his Weston ticket outlet to buy tickets when they went on sale to the general public.

"Everyone here who showed up got their ticket," he said.

"There's lots of happy green people."