Simplify the following text for a Grade 10 native English-speaking person.
Original: The Milk Marketing Board sponsored the Milk Race Tour of Britain cycle race from 1958-1993 , at 35 years making it the longest cycle sponsorship in the UK ever .
Simplified: From 1958 until it was abolished the Milk Marketing Board sponsored ( paid money for ) the Tour of Britain bicycle race , which was called `` The Milk Race '' .