[tomsthumb]

Random guess from some clown on the other side of the internet, but if I had to guess, one of the following was bothering you:

* too quick of ramp up or not enough recovery (it can take a long time to ease into this stuff)

* you were running incorrectly, either directly because of bad technique or you had bad technique because of bad posture/stride. many people land hard on their feet or turn one foot out when they run.

* you have actual medical problems with your feet or legs that would cause this

if you enjoyed it you should really look at different running techniques and make sure your stride is good so you can get back to it! if your posture is bad your stride will almost definitely be bad; you may need to start there.