Circuit de Monaco is a 3.337 km street circuit laid out on the city streets of Monte Carlo and La Condamine around the harbor of the Principality of Monaco. This means the Monaco Grand Prix takes place on real public roads that have been closed to the public and are lined with unforgiving barriers. It is commonly, and even officially, referred to as “Monte Carlo” because it is largely inside the Monte Carlo neighborhood of Monaco.
Circuit de Monaco is the shortest circuit by lap distance to host a Formula One World Championship race. F1 race length is defined as the smallest number of complete laps that exceeds 305 kilometers, but Monaco Grand Prix is the sole exception with a race length of 260.5 km. However, it also requires the most laps out of any circuit to complete the race – 78 laps in total.
The circuit is annually used on three weekends in April–May for Formula One Monaco Grand Prix, Formula E Monaco ePrix and Historic Grand Prix of Monaco.
According to the Internet