there has never been a scientifically recorded specimen of any modern snake longer than 24 feet. Trust me, I wish there was. The longest scientifically recorded snake was a reticulated python named Fluffy that died at the Ohio zoo in 2012. She was 23 feet 9 inches long.
If we have confirmed report of a giant snake attaining 24 feet, is 26 or 28 feet in length inconceivable?
For many years, until recently, science did not confirm the existence of giant squid. No we know they are there.