Open-road endurance race held in Italy from 1927 to 1957…

Open-road endurance race held in Italy from 1927 to 1957, run over roughly a thousand miles from Brescia to Rome and back. Crowds lined the roads through towns and mountain passes. In 1955 Stirling Moss and the journalist Denis Jenkinson set a record average speed of almost 100 miles per hour in a Mercedes-Benz 300 SLR. A fatal crash in 1957 ended it; today it survives as a historic rally.

The answer in 11 letters