than 40,000 stadia. Using Herodotus' standard of 600 feet for one stadium gives 4545 miles; however, there is no way to tell which standard foot was in effect. The English foot is an approximation. Strabo wanted to discredit Pytheas on the grounds that 40,000 stadia is outrageously high and cannot be real.

Diodorus Siculus gave a similar number: 42,500 stadia, about 4830 miles, and explains that it is the perimeter of a triangle around Britain.