Ards Circuit
United Kingdom
The Ards Circuit was a motorsport street circuit in Northern Ireland used for RAC Tourist Trophy sports car races from 1928 until 1936, when eight spectators died in an accident. Industrialist and pioneer of the modern agricultural tractor, Harry Ferguson was instrumental in setting up the race. As Northern Ireland's premier sporting event, it regularly attracted crowds in excess of a quarter of a million people.
Racecourse data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).