I too suffer from Achilles tightness followed by foot numbness approximately 2-3 miles into my run. I currently wear Saucony ProGrid Guides in order to correct over-pronation but I'm starting to think they hurt rather than help matters. Aggressive stretching seems to be the consensus on this thread. I will try to be more diligent about that but so far it hasn't proven very helpful.
I have already tried loosening laces, getting thinner socks and experimenting with different surfaces.
I am 30 years old and weigh about 155 lbs. Have any of you found solutions that don't involve surgery/extensive treatment? I have read conflicting information on increasing/lowering one's heel height in order to alleviate the strain on the Achilles tendon.