Simplify the following text for a Grade 6 native English-speaking person.
Original: During the mid-twenties , Anfield was the finishing line for the city marathon . Liverpool also held an annual race which started from St George 's plateau in the city center and finished with a lap of Anfield .
Simplified: Anfield is famous for the sign that is in the players ' tunnel , which reads : `` This is Anfield '' .