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The first Kentucky Derby is run, and Aristides gallops into history

On this day · 17 May 1875
40 sec read

America's most famous horse race debuted in Louisville, won by a small chestnut colt and a 19-year-old jockey before 10,000 spectators.

Verified · National Museum of Racing and Hall of Fame

On May 17, 1875, a field of 15 three-year-olds lined up at the new Louisville Jockey Club for the inaugural Kentucky Derby, watched by an estimated 10,000 spectators.

The winner was a small chestnut colt named Aristides, ridden by 19-year-old Oliver Lewis and trained by future Hall of Famer Ansel Williamson. Aristides covered the mile-and-a-half in 2:37¾, then a record for a three-year-old at that distance, beating Volcano by two lengths.

Thirteen of the fifteen jockeys that day were Black — a reminder of how central African American horsemen were to early American racing.

The distance was later trimmed to the now-familiar 1¼ miles, but the Derby itself never stopped. It endures as the longest continuously held sporting event in the United States, the opening jewel of thoroughbred racing’s Triple Crown.

15
horses ran
2:37¾
winning time
10K
spectators

Sources & references

2 references

Well-established. Corroborated by 2 independent sources.

1 National Museum of Racing and Hall of Fame article “On May 17, 1875, a small chestnut racehorse bearing the historic name Aristides proved to be the 'best of his type' ... In the irons aboard Aristides for the Derby was 19-year-old Oliver Lewis, one of the 13 Black jockeys among the 15 riders in the field ... setting a new record of 2:37¾ for a 3-year-old at the 1½-mile distance.” racingmuseum.org ↗
2 Kentucky Derby (official) official “The first Kentucky Derby race takes place on May 17, 1875. Oliver Lewis rides Aristides 1.5 miles to win, in a field of fifteen horses, in front of a crowd of 10,000 spectators.” kentuckyderby.com ↗
✓ Last reviewed Jun 7, 2026

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