Taylor Swift took "New Heights" to heart ... 'cause the singer's appearance on Travis and Jason Kelce 's podcast was one for the record books -- literally!!

Guinness World Records officially recognized T. Swift's sit-down with the Kelces as a historic event ... as the 1.3 million YouTube viewers it drew in was the biggest concurrent audience in the platform's history.

The accomplishment is no surprise -- as GWR pointed out, Tay is a "record-breaking machine" at this point ... and her "The Tortured Poets Department" album had the most first-day album streams on Spotify and was the most-streamed LP in a 24-hour period with 313.7 million.

There were plenty of info nugs dropped throughout the two-hour pod ... with Swift opening up on her new obsession with football

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