So at the moment I am only using two pairs of shoes: Adizero Takumi Sen for faster stuff and Kinvaras for easy and long runs.
This has done me well for a year or so (obviously not the exact same shoes but the same type) but lately I seem to have quite tight calves and am starting to get a few niggles.
I'd like to add in another pair of shoes to the rotation to mix things up, possibly just for easy miles, but not sure what to get.
Any suggestions?
For info: marathon training, 80+ miles per week, 2.40 PR