Sorry Timbo, I have to correct you a bit.

First, yes there only monohulls (Imoca type).

Ellen Macarthur did indeed a separate recordchase in 2004 solo round the world in a very big trimaran B/Q Castorama in 71 days.
Her round-the-world course is however not the same as now in the Vendeeglobe race.

Still, a lot off the boats who sail now, are equipped with foils (see the vids) and will need probably round the same time or less.

P.S. Macarthur did join a Vendee race in 2004 and finished second in 94 days