Members of the outlaw motorcycle gang from NSW, Queensland, Victoria and WA travelled to Canberra as part of the Comanchero's national run.

No arrests were made on Saturday, as ACT Policing's Taskforce Nemesis monitored the bikies during their visit.

"Taskforce Nemesis will be assisted by traffic operations and general duties [officers] in addressing criminal activity and any intimidating or threatening behaviour over the weekend," an ACT Policing spokeswoman said.

Bikies were seen congregating on Parramatta Street in Phillip as well as outside Parliament House on Saturday during their run.

Security for the national run was increased following a dispute between outlaw motorcycle gangs in July, which saw three bikie-related shootings in Canberra in less than two weeks.

The most recent attacks started on July 6 after shots were fired at a home in Kambah and three cars also being set alight.

Days later, shots were fired at a home in Waramanga, and at another home in Isabella Plains - next door to a childcare centre.

Police said the shootings were part of a feud between the Comanchero and Nomad motorcycle gangs.

The police spokeswoman urged the public to report suspicious bikie activity to CrimeStoppers on 1800 333 000.

With Elliot Williams.