How can I find the speed to play an animation at, so it plays a specific part of it for a certain amount of time

In my game I have a weapon swing animation for my viewmodels, I have a stat called.

StrikeWindUpTime used to determine how long a directional attack takes to wind up.

I have an animation for a person delivering that strike and I have a marker/keyframe placed on where the Wind-up phase of my animation ends.

I want to determine at what speed I need to play the animationtrack at for it to go from 0 to the position of said marker at a speed that makes it take the same time as StrikeWindUpTime.