American runner was treated at a Charlotte, N.C. hospital this week.
She endured humid conditions to defend her crown.
Grete's husband continues to hear tributes being paid to his late wife.
Deena Kastor makes her post-pregnancy comeback.
A special commemerative medal will be given to race participants.
Deena Kastor was present at the Central Park event but scratched due to inflammation in her previously injured foot. Despite Kastor’s