re: Running shoes for half-marathon

I've had issues ramping up mileage in altras. Not really the shoes fault, but the zero drop. Spent about 6 weeks in physical therapy and switched to an 11mm drop shoe before it went away. I'd like to slowly transition back because I did like running in them. Achilles pain only came after the run. But I have had a few races that required me to get in the mileage now, so they are picked up in the closet. Next goal is a full iron man though, and I don't see running in altras for a full marathon working out for me. So it'll probably be quite a while before I transition back.