A 48-year-old male presents with a history of worsening burn…

A 48-year-old male presents with a history of worsening burning left heel pain for the last few weeks.  He states that it is worse in the morning after getting out of bed and beginning to walk; it improves with exercise.  He denies any foot numbness, tingling, or known injury.  He states that he recently began a jogging regimen.  Which of the following conditions is the most likely diagnosis?