The consensus has been that he probably took his information from Pytheas through Timaeaus .
Diodorus Siculus gives a similar number : 42,500 stadia , about 4,830 miles ( 7,770 km ) , and explains that it is the perimeter of a triangle around Britain .
The consensus has been that Diodorus Siculus probably took Diodorus Siculus ' information from Pytheas through Timaeaus .
Diodorus Siculus gives a similar number : 42,500 stadia , about 4,830 miles ( 7,770 km ) , and explains that it is the perimeter of a triangle around Britain .