glutton for punishment
With only 3 years of running under your belt, I would wager that you can go lower. How much mileage have you been doing over the 3 years? Are you willing to run more?
i have been averaging 20-25 mpw.
i could probably get to 30-35 but that is about it.
it is taking me longer to recover after long runs. i have to take at least 1 sometimes 2 days off after a long run (10+ miles)
In an infinite universe, the one thing sentient life cannot afford to have is a sense of proportion
I've seen a 50-year old run 17-flat. So I'd say that's about as low as you can get.