Sadly, I can get through a jar of this in a week and a half. Peanut butter has such a bad reputation. People complain that it's fatty and addictive.
Yes, peanut butter has 16 grams of fat per 2 tablespoon serving, but it's monosaturated, aka "good" fat. Also in that same serving, you get 7-8 grams of muscle-building vegetarian protein and good satiety.
I wouldn't recommend eating this too close to a run, but it's a great post-run snack when combined with whole grain breads, fruit, or vegetables. Maybe even out of the jar.