It’s not fast, but riders are furious.

The M42 Crosstown was just crowned the slowest bus in the Big Apple — a title that its riders say comes as no surprise.

The MTA shuttle earned the first “ un-coveted Pokey award” from the New York Public Interest Research Group in three years after clocking in at an exhausting 5.25 miles per hour on average.

At that pace, the M42 would have fittingly finished in 42,232nd place of the 59,226 runners at this year’s NYC Marathon.

“It’s torturous,” said Leanne Ottomanelli, who rides nearly the entirety of the M42’s 2-mile route six times per week — a journey that takes 45 minutes.

“I’ve used this route my whole life, on a regular basis 14, 15 years. To me, it’s gotten worse because there’s more people and the same — or less — buses.”

“I hate the

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