"Casting Out" During Acceleration

[tb2010]

@hemann

how flexible are your quadriceps? increasing flexibility, specifically in your rectus femoris muscle can help your trail leg extend further back.

I had a similar problem to what I believe you are describing. Im no expert, but its something you could perhaps check out.

this looks more like top speed too, which i think i also need to work on having a positive shin angle at top speed as well, as the casting out happens at all stages while i run i believe