Thirty-three machines lined up on July
4, 1931 for this race on the Spa circuit, ten being sports models and the other cars of
standard type. The greatest distance was covered by Prince Dmitri Djordjadze and M.
Zehender on a Mercedes-Benz; they covered 1,580.7 miles at a speed of 65.8 m.p.h A lap
record was set up by a British driver, G.E.T. Eyston on an Alfa-Romeo with 77.86 m.p.h.
Seventeen cars were running at the end of the twenty-four hours, and all won prizes, owing
to the numerous sub-divisions and classes into which the entrants were divided.