Really? I find that my knees hurt worse when I've been on a treadmill, but I think it really what you are used to. I will tell you that for running an actual 5k, you will need to run outside more... just to get used to the terrain changes. I know you can do this on a treadmill, but they are so "predictable." Nothing like doing a 5k that starts 1/2 miles up hill, 2 miles downhill and then the rest straight back up to where you started and not being mentally prepared for that.
Currently, using JC HCC, Too Shea, CK and CCSS, RR or LOOB or MOP-C.
CK is the one!!
as of 6/17/10 - I have to add Joico!
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We could learn a lot from crayons; some are sharp, some are pretty, some are dull, some have weird names and each is a different color. But they all have to learn how to live in the same box. ~Anonymous
Life is full of oxymorons....and morons too. ~hopetocurl