Plantar fasciitis is a common cause of pain, particularly in runners and certain other athletic groups. This syndrome must be distinguished from certain other conditions, such as the tarsal tunnel syndrome and achillodynia. Conservative therapy including rest, orthotics, heel cups, anti-inflammatory agents, and icing reduce symptoms in most patients. A few athletes may need surgery to continue running. The authors released the plantar fascia and excised areas of mucinoid degeneration in 15 athletes. Fourteen returned to full athletic activity.