What sort of running prowess would you stake your life on:
100m spring speed
middle distance speed
or 10k/marathon level endurance
I mean, say the murder grabs a hold of the fabric of your jacket sleeve, but you twist away. If you don't have sprint speed, he will have hold of you again in an instant. However, if you but a bit of distance between you but have no endurance, he's liable to stalk you until he has you.
What's it going to be?