I just ran speed 7.5 (I think that's in MPH, I usually am in a sprint at

S

Sangha J

New member
around 9.5 speed so I'm guessing its)? MPH. I ran the speed for 25 minutes straight.
Is that good?
How much time could a professional runner survive speed 7.5 for?

The treadmill was made in USA so I'm assuming that it's MPH.
I can run speed 8.0 for 15 minutes.
And I can run speed 8.5 for around 9-10 minutes.
How much time could a professional runner survive speed 7.5 for?
How much time could a professional runner survive speed 8.0 for?
And how much time could a professional runner survive speed 8.5 for?
and are these good times that I have
 
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