If I am going at a 10 mph pace but there is 9 mph wind, how fast am I going?

Evanfire3000

New member
I went for a run today hoping to break my 2 mile PR but the first mile was much slower than I expected. I was doing fine until I got to a stretch right on the water, where it was extremely windy (The wind was against me). I started out going at about 10 miles per hour, and after about the first 1/3 mile, it felt terrible. Does wind affect running speed that much, or did I just have a very bad day?

Thanks for your answers!
 
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