Answer:
Runner 2.
Step-by-step explanation:
Runner 1 is running 2 miles every 20 minutes, or 1 mile every 10 minutes.
Runner 2 is running 1 mile every 8.5 minutes.
Runner 3 is running 2 miles every 18 minutes, or 1 mile every 9 minutes.
No matter what, they are all running faster than me. Hope that this helps!
