Brighton swimming club
The English Grand National, not a flat race but it's run in the flat season, making it the longest race in the flat race season.
The Clonliffe 2 Mile race held its 116th edition in 2007, making it among the oldest in the world. The world's oldest marathon is the Boston Marathon which held its 112th race on April 21, 2007. The world oldest race are the Atlanteans (even though they are no longe here) they were the first known and civilised race. Hopefully that was what you meant
No, Kush was not a human race. It was an ancient kingdom in Nubia, located in present-day Sudan. The people of Kush were part of the larger African population.
The oldest sporting venue in the US is Saratoga Race Course.
The San people of southern Africa are believed to be one of the oldest continuous populations in the world, with a history dating back tens of thousands of years. They are known for their hunter-gatherer way of life and unique genetic lineage.
Sailing rocks of Death Valley Racetrack
Champion Standard Open NH Flat Race was created in 1987.
The oldest person to run the 2016 race was Fauja Singh, who was 104 years old. Singh became the oldest person to complete a full-distance marathon, finishing the race in 3 hours, 56 minutes, and 34 seconds.
Norman Vaughan
Indy 500
It is unclear which ethnic group is the oldest as all human populations have evolved and diversified over time. Modern humans originated in Africa and have migrated and intermixed throughout history, so there is no single "oldest" ethnic group.