Quote Originally Posted by alwaysinjured View Post
Since the BG is over 120 naismith miles, and therefore faster than 12 min equivalent flat miles arguably you cannot do 12 min miles downhill on good paths and still succeed on the BG as a whole.
Doesn't Naismith equate 1000ft ascent to 1.5 miles, which for the BGR gives just over 100 miles (assuming 63 miles, 26000ft).