4 Hours of Estoril

The race was first held in 1977 as a round of the World Sportscar Championship.

It was revived in 2001 for the European Le Mans Series as a 6-hour race, and continued until 2003 under the FIA Sportscar Championship.

Between 2014 and 2016, the race was a part of the European Le Mans Series, in the format of 4 hours.

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