2 foot lengths to the front pedal. 3 foot lengths to the back.
The pedals should be at 45 degrees for the fastets angle of attack.
Once your blocks are set, you gotta take a few steps back.
Check your work. Make sure that they´re straight and aligned with the track.
Now push them into the ground, so they won´t move around.
If your blocks be slippin´, you´ll be trippin´ and face plant into the ground.
Put your strong leg up front when you take your marks.
If you´re not sure which leg that is, test both and get some timed benchmarks.
Your hands should be up to the line. Arms should be shoulder width wide.
The head should be straight with the spine.
Stay relaxed with no tension inside.
When you raise into the set position there are 4 things you can´t be missing.
The angle of bend at the knees. For the front it´s 90 degrees. 120º at the back when you freeze. This is the setup you need.
The shoulders over the hands and slightly ahead of the line. Keep them lower than the hips and you´re ready to run a fast a time.
Now you know the basic setup, but every sprinter is unique. Take time and make adjustments that work best with your physique.