The sponsorship will allow the operator to maintain its on-course branding across all middle-distance, marathon and sprint categories for the next three seasons.
Betway's sponsorship includes: Good Friday's £1m Finals Day, Easter Classic, Winter Derby and four listed contests over the course of the current flat season.
Betway also recently agreed to continue as Aintree’s official betting partner of the Grand National Festival for a further five years.
Betway's Alan Alger said: "After a highly successful three seasons sponsoring the All-Weather Championships, we’re really happy to be extending our involvement for another three.”
ARC’s Group Director of Partnerships, David Leyden Dunbar, said: "Betway have been fantastic supporters of the All-Weather Championships and we’re delighted to extend the relationship over the coming seasons."
