My plantar fasciatis symptoms were exactly like what you described -- and were completely cured by custom orthotics (which I wear in the bike shoes) and stretching the calf many time a day.

On the other hand, radiating calf pain can be a symptom of pulmonary embolism - which my sister-in law survived by the skin of her teeth (and a really great EMT and ER) last year. So do be careful please.

I come from a long line of amature physicians, so take this with a grain of salt .

Hope you are feeling better soon.