This happened to me with my first half - I ended up going into the race (since I already paid for it) with the mind set that I was going to walk it. After a few miles, I decided I could run and didn't do too badly considering - but it did take a long time for me to recover, so I'm not at all saying it was the right thing to do - just what I did :)
I did some research after that race and learned that weak hips can cause this... I started doing some hip flexor exercises with a band and have had no issues with my knee/it band since.
I'm not a dr and I don't play one on tv, but it is what worked for me!
Good Luck with what you decide!
"but those who hope in the LORD will renew their strength. They will soar on wings like eagles; they will run and not grow weary, they will walk and not be faint." Isaiah 40:31
Seattle RocknRoll Half Marathon June 26th 2:38:?
Disneyland Half Marathon Sept 5th 2:14:46
| Pounds lost: 5.4