THE 18 year old who ran 2:02 in the marathon was about 4:40-4:44 a mile in the marathon. Why is it impossible to run it 10 seconds faster for pace? Was the 4:00 mile impossible? NO IT WAS PROVEN U CAN. You need the right mindset and believe you can do it. Take it as one big tempo run. If you can take it you can make it.