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They’re the fighting Irish.

The St. Patrick’s Day Parade stepped off Tuesday — despite being postponed over coronavirus fears — with a small group marching up Manhattan’s Fifth Avenue to keep the more-than 250-year tradition alive.

“New York City St. Patrick’s Day Parade Board of directors and committee members were led from the 69th Regiment Armory up to Fifth Avenue where we marched and preserved the history of the Parade,” the group posted on Instagram.

The band of nine parade committee members and 20 members from the 69th Infantry Regiment kept their distance from each other as they marched in the rain at around 6:30 a.m. to the sounds of bagpipes and as they held up a banner that read “St. Patrick’s Day Parade.”

A tri-state agreement between New York, New Jersey and Connecticut bars all gatherings of 50 people or more, and Tuesday’s parade – which had a police escort — complied with the restrictions.

The small St. Patrick’s Day parade was unannounced and approved by the city, parade officials said.

“We wish everyone a very happy and safe St. Patrick’s Day,” St. Patrick’s Day Parade Chairman Sean Lane said. “I would like to personally thank the members of the parade committee, 69th regiment, and parade board, who joined our symbolic 259th march today and a special thank you to the NYPD.”

Parade-goers marched in the street from the 69th Regiment Armory at Lexington Avenue and E. 26th Street to St. Patrick’s Cathedral where a priest gave a blessing.

Then a smaller band of marchers walked on the sidewalk for the rest of the route, ending at 79th Street.

Parade officials said that marchers only met outside and walked several feet apart.

Typically, Manhattan’s St. Patrick’s Day Parade hosts some 250,000 marchers and two million spectators.