Mog,
You made me go back and weigh all the food and think about it.
That weight training run cost us the following.
Total for 50 miles:
lbs = 23.2 ( 11.2 lbs of kibble, and 12 lbs of ground beef/fat)
Kcal= 38,480
per mile:
lbs 0.22
Kcal = 769.6
and 5 gallons of water to soak the food.
That was for one meal. They got a second one later in the day to refuel, so we can't count that, but they did get the same meal early in the morning before the run. So perhaps it would be more accurate to double the estimate to include the pre-run fueling.