I ran 2 full marathons: January and March... achilles tendon was fine. A couple weeks after the second marathons, I road my bike for the first time since November and whammo on the run. Aches in the tendon while running 7 miles... and far worse after running. Things settled down a bit a week after that. Then went for another bike ride and whammo on the run... not quite as bad. Ran another marathon today and it hurts like a hell after mile 17 but a problem from nearly the get go. I managed through it... but not sure if this could cost me down the road as I have IM in November again. I don't know if it is the way I pedal or that the LOOK cleats have worn down to angle my foot differently. I will swap out the cleats for new ones. But concerned it might be in my riding... maybe my foot is angled down too much...

Thanks in advance :)