What is kentucky derby ?

[{"selector":"#anim-20a7a221-470d-44bb-8e2d-74f8f3e2df7d","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-805cc893-f553-4952-a509-62e3b2623509","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-e6959fa0-6914-4796-a881-f5f872b78fbe","keyframes":{"transform":["translate3d(0px, -756.57726%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-37f9287c-95c0-4f0d-9f94-99a0f6d2e47b [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(47.174943955395186%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] Img : BBC

Kentucky Derby, the most prestigious American horse race

[{"selector":"#anim-61d19357-4a68-49bd-88a6-35442547ad1e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.291376168820104%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-a4559d99-7cee-4cdb-8015-442b665b723c","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-a6e296d2-1ed9-4dc3-b7ff-834318a3f3f8","keyframes":{"transform":["translate3d(0px, -542.92126%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-ac178282-614d-4b20-8977-7b09910506eb","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC

This Start in 1875 and run annually on the first Saturday in May

[{"selector":"#anim-119e4bc3-54eb-406f-9fb9-b0e6078d64a9 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(31.227832001310475%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-4a18ac27-98ff-46ba-bdb0-e8ed20eb8859","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-051cee74-59d3-4c7f-bcac-3f918d88f776","keyframes":{"transform":["translate3d(0px, -530.8245%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-78442de3-60cf-48b8-ba5f-b68626ed1c4e","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC

At Churchill Downs racetrack, Louisville, Kentucky.

[{"selector":"#anim-0a240b6f-635a-401d-9e22-fda1af7cb735 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(31.224208964473632%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-30c2a6b0-81f1-4e29-85fd-26676f153a56","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-dce3ddff-165d-4a51-8a62-f6f213321559","keyframes":{"transform":["translate3d(0px, -525.17932%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-50398fc1-b8fe-4004-b1cb-41a65cd09216","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC

The Derby field is limited to three-year-olds and, since 1975, to 20 horses

[{"selector":"#anim-61847e83-97f0-48ae-b2f5-899cc230dd6c [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.812499744007886%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-13202dec-2e43-4fdd-8d87-aab7ed2a8ede","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-885512ef-eba1-4fde-8c4e-c518d6f7a744","keyframes":{"transform":["translate3d(0px, -403.81738%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-88c173a9-1555-4879-a73c-36e999d8c66d","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC

fillies carry 121 pounds (55 kg) and colts 126 pounds (57 kg).

[{"selector":"#anim-43c31d0b-1230-41e4-b435-712b16379a1e [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.8337101513764065%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-ffe3533c-d454-4165-a2b6-780ae97033bf","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-c2d739f0-0779-4726-a68f-fcc7c80e363d","keyframes":{"transform":["translate3d(0px, -521.14707%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-149a0566-d70d-4687-9b81-6fb2c4d9d15e","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC

The race distance was reduced in 1896 from 1.5 miles (about 2,400 metres)

[{"selector":"#anim-1dc57306-df64-43c0-9376-d80c8b29e48d [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(7.812499744007886%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-fb4148df-1b4b-416a-a2cb-c42019e9eab6","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-29e01838-4975-4a79-acbe-7617b8ff812f","keyframes":{"transform":["translate3d(0px, -397.68239%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-f1fa410a-5930-4a60-854d-07c1bb0e9e6e","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC

Present 1.25 miles (about 2,000 metres). In the early 21st century it was one of the

[{"selector":"#anim-3a8c4978-4534-458e-8bc1-8dd997823614 [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(31.249999886225726%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-7b45d7a4-5e9f-414c-bcb7-23b092392010","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-6058f631-6f48-45bc-b506-6bd1e5cb0435","keyframes":{"transform":["translate3d(0px, -322.27695%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-506d293d-3337-41c5-bf80-0595a0ec8538","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC

Most popular single-day spectator events in the world,

[{"selector":"#anim-d0a2a638-063a-4287-ae33-18b151bcc2cc [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(24.386160727591434%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-aa3fcca0-0460-4944-aed7-1d9775454e25","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-be9366d6-3d10-4f7b-a610-c107f1ca0d73","keyframes":{"transform":["translate3d(0px, -529.21157%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-583ba183-70f2-43ed-938b-382213e53b0c","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC

Attracting some 150,000 spectators to Churchill Downs annually

[{"selector":"#anim-61c8b4d1-9eff-4f68-9583-461f5f51c4ee [data-leaf-element=\"true\"]","keyframes":{"transform":["translate3d(44.53822523482287%, 0, 0) translate(25%, 0%) scale(1.5)","translate3d(0%, 0, 0) translate(0%, 0%) scale(1)"]},"delay":0,"duration":2000,"easing":"cubic-bezier(.14,.34,.47,.9)","fill":"forwards"}] [{"selector":"#anim-6fe695fe-0504-4133-a42e-b42abc72f651","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-878f95f0-e254-4767-b430-45965543eec4","keyframes":{"transform":["translate3d(0px, -397.68239%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-b59b841e-eeec-4655-8463-ea6e6606ed1b","keyframes":{"opacity":[0,1]},"delay":600,"duration":1600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Img : BBC