I thought you guys who have been running for far longer than I have might be able to offer some advice.
Yesterday, I noticed that my knees were hurting a bit. Not a lot and only when I'm running. Today, they were worse. Not so much that I can't run and not so much that it really impedes my runs, but by the end of my training session today, I could definitely feel it.
When I mentioned this to my running partner today, she thought it might be that my shoes are too old, but they're Adidas running sneakers I bought in May, so it's not that they're old, lacking in quality, or shoes designed for something other than what I'm using them for.
I should mention, for the record, that this is not the sort of knee pain I had when I was younger with ACL and meniscus damage. This is definitely joint pain.
So, am I running too often too quickly? We're at the end of our third week of actual training on a program that has us running three times a week. I am terribly afraid of not finishing this race, so I've been tacking on another two because three runs (of which two are short little half hour runs -- we're doing Jeff Galloway's training program) doesn't seem like it's enough to build up the endurance we need to do an entire half marathon. I can't fail at this, but it's also way too early to be having knee problems.