50 Mile Training Plan Spreadsheet. The book includes 24 week plans for 50k and 50 miles, and a 48 week plan for 100 mile race. The majority of the book (118 of 233 pages) contains the three detailed training plans.
10 weeks, 6 days/week with 2 rest weeks at lower volume. Other examples are swimming, or biking. Plan your race strategies, gear and clothing, drop bags, crew and pacers, blister care, etc.