It is to improve the welfare of horses
The Grand National will be reduced from 40 to 34 runners from next year to improve the welfare of horses.
Three animals in April's field died after sustaining injuries in the famous race at Aintree.
The 5-15 start time will also be brought forward so that they get the best of the course conditions.
It's the first time since 1984 that the maximum field size will be cut.

Three Kildare Players Have Been Named In Match Day Squad URC Against Zebre
Friday Morning Sports Update
Sarah Keane Confirmed As CEO Of Cricket Ireland
Jason Holland Will Step Down As Assistant Coach With New Zealand
Thursday Morning Sports Update
Wednesday Evening Sport's Update
Cutting Inter-County To Sevens Months Is 'Achievable' Says Gaelic Player Association CEO
Kildare's Lauren Walsh Will Play At Golf's Wistron Ladies Open On Friday