Forums >Running 101>What is 4 X 400?
You'll ruin your knees!
""...the truth that someday, you will go for your last run. But not today—today you got to run." - Matt Crownover (after Western States)
esq.
CPT Curmudgeon
So - dumb question, but is a 400 one lap around the 'virtual' track on my treadmill?
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