60 minutes speed intervals on stair mill.
So I ran stair intervals for 3 hours and 15 minutes this week. I really like how I feel after running them. It is the same feeling I get after a good run. Hopefully running the stairs will be good enough to get me ready for the marathon at least until my calf starts behaving. My calf has felt perfect the last few days, so I will try a run again tomorrow.
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