Guinness World Records said Severinson, 47, completed swimming on November 26 in La Paz, Baja California Sur, Mexico.
The previous record of 177 meters was set in 2016 by Carlos Coste.
Severinsen said the record-breaking swim was aimed at increasing environmental awareness.
“When the world hit Covid-19 nearly a year ago, I was looking for a way to show that the pandemic was not an excuse to forget our priorities of nature, or put our aspirations into gear. On the contrary. This is why I spent the time training and developing myself and my mission.
Severinsen described the 202-meter distance as “symbolic”.
Severinsen also holds the record for the longest swimming distance under the ice with fins, a diving jacket, and without a diving jacket, at 152.4 meters and 76.2 meters, respectively.
He also set a record in 2012 for the longest breaths taken voluntarily, holding his breath for 22 minutes. The record has since been broken at 24 minutes 3.45 seconds.