The average round wooden HB pencil will draw a line 35 miles long - which is enough to write approx. 45,000-50,000 words!

The average ballpen writes approx 900m - 2,000m (depending on the brand). Bic say that their ballpens will write for between 2-3km (1.2-1.8 miles) - or six Eiffel Towers!