By 1906 automobile racing had existed for over a decade — the Paris–Bordeaux–Paris race of 1895 and the Gordon Bennett Cup series had established long-distance competition as a serious international sport. The ACF sought to create something more controlled: a defined closed circuit rather than open city-to-city routes, and a title — "Grand Prix," French for "great prize" — that would signal both prestige and format ambition.
The circuit was a triangle of public roads south-east of Le Mans, measuring 103.18 km per lap. Thirty-four entries representing French, Italian, and German manufacturers started across two days of six laps each, a total distance of 1,238.16 km. The ACF's format was immediately influential: Germany established its own Kaiserpreis the following year in direct response to the French event's success.
Szisz drove for Renault and took the lead on the third lap of the first day, a position he did not relinquish. The Renault AK 90CV displaced approximately 13 litres and produced around 90 hp, placing it among the most powerful cars of the era. A decisive technical advantage came from Michelin's newly developed detachable wheel rims, which allowed tyre changes in two to three minutes rather than the fifteen or more required by competitors using traditional rims. On a rough road surface where punctures were frequent, this innovation proved race-winning.
Szisz reached a top speed of 154 km/h during the race and completed the full 1,238 km in 12 hours, 14 minutes, and 7.4 seconds. His margin of victory was over 32 minutes — extraordinary even across a two-day format.
The 1906 French Grand Prix established the template that [[formula-one|Formula One]] and every subsequent Grand Prix series has followed: a closed circuit, competitive entries from multiple manufacturers, a timed aggregate result, and an international field. The ACF repeated the event annually, and by the 1920s the French Grand Prix at Strasbourg and Montlhéry had become the centrepiece of European motor racing.
Szisz's victory also demonstrated that technical innovation — in this case Michelin's detachable rims — could be as decisive as raw engine power, a dynamic that has defined Grand Prix racing ever since. Renault's commercial sales reportedly increased significantly in the year following the win, establishing the logic of manufacturer participation in Grand Prix racing that persists to the present day. Le Mans itself became doubly embedded in motorsport history: as the site of the first Grand Prix in 1906 and as the permanent home of the [[24-hours-of-le-mans|24 Hours of Le Mans]] endurance race from 1923.
[[le-mans|Le Mans]] — the city that gave motorsport both its first Grand Prix and its most famous endurance race
[[formula-one|Formula One]] — the direct institutional descendant of the Grand Prix tradition
[[french-grand-prix|French Grand Prix]] — the series of French Grands Prix from 1906 onwards
[[24-hours-of-le-mans|24 Hours of Le Mans]] — the other defining race Le Mans gave to motorsport history
[[renault|Renault in Motorsport]] — manufacturer whose 1906 victory launched the Grand Prix era commercially
[[grand-prix-racing|Grand Prix Racing]] — the broader tradition the 1906 race inaugurated
[[automobile-club-de-france|Automobile Club de France]] — the organising body of the first Grand Prix