Accomplished by Sodebo, a 105-ft trimaran. The time was 40:10:46 over 45,568 km, for an average speed of 54 kph / 33.5 mph / 29.17 kts.
This beat the previous (2017) record by over 12 hours. A time under 40 days looked possible until encountering tricky Atlantic Ocean weather in the final week.
The start/finish is a line between Ushant and The Lizard - basically, the southwesternmost point in England and the northwesternmost point in France. You cross this westbound then must pass the Cape of Good Hope, Cape Leeuwin and Cape Horn (leaving all of these to port). You finish by crossing the start/finish line eastbound.
I think the minimum possible distance matches the circumference of the Earth (40,075 km).
Except they eschewed using either of the Panama/Suez Canals and spent many thousands of miles going down and up the Atlantic… [Will either even let in sailboats I wonder? Portage?]