Footwear of sibling changing hands before American race and training run

'footwear' is the definition.
I know nothing about this answer so I can't tell whether this works.

'sibling changing hands before american race and training run' is the wordplay.
I cannot quite see how this works, but
'sibling' could be 'bro' (I've seen this before) and 'bro' is found within the answer.
'american' could be 'cree' (Native American) and 'cree' is present in the answer.
'training' could be 'pe' and 'pe' is present in the answer.
'hands' could be 'lr' (I've seen this in other clues) and 'lr' is present in the remaining letters.
The remaining letters 'the' is a valid word which might be clued in a way I don't understand.
This explanation may well be incorrect...

'of' is the link.

Can you help me to learn more?