Just had a discussion at the gym with a friend after our 30 min cardio session. He noticed me finish my run with a little two minute sprint. He asks me "how fast was that sprint?". I said 6.6 mph (which for me is fast!).
My friend says "double that speed and keep doing it for 2 hours and you can beat the world record!". I thought he was exaggerating but its true. Eliud Kipchoge recently ran a sub 2 hr marathon and I didn't realize just how amazing that is.
you would need to run at a pace of 13miles per hour for 2 hours. That is crazy...I can't do that pace at all, never mind trying to hold it for two hours. Even running 7mph for a few minutes kills me. He averaged 4min and 34 sec per mile, a few decades ago even running a sub 4min mile was considered impossible. Incredible.
Any runners out there attempt running at this pace on a treadmill? I didn't even think it was possible to go that fast on a machine.
Here is a cool link to people attempting this for 400 m