I am sure that there was more competition but the next major event was held on Christmas Day 1938 which attracted two Alfa Romeos from Italy as well as many locals.
[1] It was won by an "Alfa Romeo 8C 2300 Monza" driven by Emilio Romano on the Christmas race called Coppa di Natale.
[2] Before there has been a race for smaller cars with less the 1500cc, that was won by a 4CS Maserati and was called Coppa Governatore.
In the main race there were 14 Alfa Romeo 1750[3] and was enthusiastically followed by many thousands of Italians and Eritreans[4] The "Primo Circuito di Asmara" was made of two car races, the first being the most important: The race was done on the streets of Italian Asmara, with the start in front of the Asmara Opera: it was long nearly 2865 meters on each side of the "Viale Milano" and "Viale Roma" (now called "Sematat avenue") and lasted 40 laps (in Italian called "Giri") for a total of 108 km[5] The second "Circuito Asmara" was to be done in December 1939, but the beginning of World War II blocked it.
[9] The last that was done in 1972[10](when was called "Gran Premio Automobilistico Expo'72"[11]) with the presence of emperor Haile Selassie[12] With the start of the Eritrean Civil Wars related to the struggle for the independence of Eritrea from Ethiopia all the car races were stopped in Asmara.