1. You’re not embarrassed to show someone where your hamstring *really* hurts.
  2. You could watch a whole marathon and not be bored.
  3. You can use endorphins in a sentence.
  4. You check out the running stores for the new styles.
  5. You get excited when you hear that there is a new Gatorade flavor.
  6. You keep track of your shoes’ mileage.
  7. You get up earlier on weekends to run than you do on weekdays for school/work.
  8. You think of distances in terms of mile repeats.
  9. You always consider chafing while dressing yourself.
  10. Your friends know to never call you after 8:30pm.

Also check out 10 Signs You Might Be a Runner.