Yes, in years gone by.
Akin to watching paint drying on water - little boats whizzing up and down the Seine with a buoy at either end of the course.
It's no longer a genuine 24 hour race following the death of a gendarme in a police Zodiac hit by a competitor in 2010. Now it's split into 3 separate races, I think.
For afficionados of that type of power-boat racing only IMHO.