coming back to comment that I used this plan again while training for a 100 mile attempt (part of a 30 hour race). I successfully completed 100 miles (in under 25 hours) and again, my recovery has been fairly smooth. Because I was aiming for higher than 100k, I did all the higher end volumes for runs with a range, and instead of just 10 minute warm up/cool downs, I always did 2 miles warm up/cool down. I would still love to see an actual 100 mile training plan, but all my internet researching said that at that distance the plans don't include significantly more mileage, so I felt okay with this. Thanks Ben, for a well thought out and clearly presented plan!