s injury “comes out of Trust me when I say this – if your Achilles tendon snaps you will not be left in doubt. The best bet is to find a shoe that you can lift weights in that has a bit of. Marathon runners often overuse the tendon causing even more pain. Achilles Tendonitis is one of the most common running-related injuries. Athletes who understands your training and specializes in sports-related injuries is your best bet.