Is the pain on the arch, or the heel?
Plantar fasciitis is a painful inflammatory condition of the foot caused by excessive wear to the plantar fascia or plantar aponeurosis that supports the arches of the foot or by biomechanical faults that cause abnormal pronation.[1] The pain usually is felt on the underside of the heel, and is often most intense with the first steps of the day. It is commonly associated with long periods of weight bearing or sudden changes in weight bearing or activity. Jobs that require a lot of walking on hard surfaces, shoes with little or no arch support, a sudden increase in weight and over activity are also associated with the condition.
If it is actually the arch is could be due to tight lateral and medial gastroc and/or perineals (calf muscles). It would not be unwise to foam roll/SMR/stretch the calves before and after work outs and on rest days.
