Best Answer

You need to maintain a pace of 17.9 mph

Q: How many mph do you have to run to get 50 seconds in a 400?

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You ran 88 yards in 45 seconds at 4 mph.

14.05 mph

About 90 seconds maximum.

11.1014 mph

3.19 MPH

19.2839 mph

9.77 mph

Completing a 220 yard dash in 27 seconds equates to a pace of 16.7 mph

60 seconds = 1 minute = 1/60 hour. 0.25 miles per minute = 0.25 x 60 = 15 mph

At least 16.8 mph

22.5 seconds.

Denard Robinson can run a 40 yard dash in 4.23 seconds, by this we can gather he runs 28.4 ft/s so if you do the math correctly he can run just about 19.4 MPH.