aztimm

I'd try some KT Tape. You can order it from Amazon, or many other places, and I think even some normal retailers sell it. There's directions that come with it, or they have videos on how to apply it on their website.

A note of caution--this stuff will stay on for days. I've applied tape on Sunday, and it will usually last until Tues/Wed, even with swimming an hour each day with it on.

But this kind of begs the question, do you know that the pain is from your knee, and not shin, quad, IT band, ACL, or something else?

Other than avoid the pavement, what else have you done?

I'd also recommend trying a couple of these: light stretching (a little pain is OK, too much then stop), rolling on a foam roller, icing/ice bath (or a plunge in a cool pool may work), massage, use Biofreeze, and certainly some pain killers (I prefer Aleve).