They’re too hot to trot.

The New York Racing Association announced Thursday it was canceling all heats scheduled at the Saratoga Race Course for Saturday — citing boiling temperatures forecast for the weekend.

It’s the first time in 13 years horse racing has been canceled at Spa City’s prized track — an upstate vacation destination.

“This is a responsible and prudent decision that aligns with our New York Racetrack Heat Management Protocol designed to ensure safe racing for all participants,” said the state gaming commission’s Equine Medical Director Dr. Scott E. Palmer.

“We are canceling Saturday’s card in the best interests of the safety of our equine athletes and horsemen,” said NYRA CEO & President Dave O’Rourke.

“Assessing the safety of racing conditions, including weather, racing surfaces and race-day scrutiny, is of the utmost importance to NYRA and our industry partners,” he added.

The National Weather Service predicts the mercury will rise to between 105 and 110 degrees Saturday. The last time the track closed due to heat was Aug. 2, 2006, when temps spiked to 110 degrees.

Training hours will be moved up for both the main track and Oklahoma training track, so horses can still get their workout in, albeit in the cooler early morning hours, starting at 5 a.m.

Belmont Park will also be closed Saturday because of the heatwave.