Did you read this in the description?
We have made this plan customizable to fit the needs of as many different runners and events as possible. The weekly volume (distance, time and vertical) totals shown in the plan summary do not show the actual progression you will make. You will determine the starting weekly distance and vertical gain/loss based on the event you are training for. Weekly distance and vertical will start at about 50% of that event’s largest single day’s total and then progress to about 100% of that figure.
This is very similar to the training plan that Luke Nelson used to place 8th in the Tor d’Geant. In the previous 9 months Luke averaged just 43 miles/week.