The "largest contingent" of riders on record took off from Dubbo on Friday to take part in the 10th anniversary Wall to Wall ride.
After travelling through Wellington and stopping in Mudgee and Lithgow, about 50 riders from the NSW Police western region will gather with colleagues and friends in Sydney for a special service at the Wall of Remembrance on Saturday.
The service and ride honour police officers who have died.
After the service riders will travel to Canberra's National Police Memorial wall where they will take part in a larger service with about 3000 colleagues from across Australia.
Assistant NSW Police Commissioner Geoff McKechnie, Orana Mid-Western Police District Superintendent Peter McKenna and state Member for Barwon Roy Butler are among the riders taking part in the Wall to Wall ride.
In addition to giving officers the opportunity to reflect and remember, the Wall to Wall ride serves a fundraiser for NSW Police Legacy, which helps the loved ones of officers who have passed away.
"It's a time of mateship," Superintendent McKenna said.
"We'll have a laugh and a beer and remember."
Like many good initiatives, the Wall to Wall ride began as a result of a conversation had between two mates over a beer or two.
"How about we organise some mates to ride to Canberra and meet at our National Memorial," Assistant NSW Police Commissioner Michael Corboy and Victorian Police Inspector Brian Rix asked in 2009.
The pair were motivated and inspired by the popularity of a motorcycle police charity event which honoured the service of law enforcement officers killed in Texas.
Other police colleagues from across Australia backed the idea to hold a similar event in Australia.
The Wall to Wall Ride is now one of the most anticipated events on the police calendar.
Retired officers and family and friends of police are invited to participate in the ride with serving officers.
On September 29 police will pause again to honour officers whose lives have ended in the line of duty.
The annual Police Remembrance Day also serves as a time to remember officers who have died as a result of illness or other circumstances.