As a three-year-old in 1965, What a Treat won seven of the top races for her age group, including a win over older stars Tosmah and Affectionately in capturing the Beldame Stakes.
At age four, carrying high weight, What a Treat finished off the board in the February 15, 1966 Columbiana Handicap at Florida's Hialeah Park Race Track.
What a Treat was retired to broodmare duty at owner George Widener's Old Kenney Farm near Lexington, Kentucky, where he bred her to Never Bend.
Following Widener's death in December 1971, on February 12, 1972, What a Treat was auctioned through the Keeneland Sales to a breeding syndicate from France for a then world record price for a broodmare of US$450,000.
[2] Of the foals she birthed for her new owners, her mating to Northern Dancer was the most successful, producing the 1974 colt Be My Guest.