I ran a hilly 5K race Sat. Did not feel pain or injury during or after the race. Sunday night, my inner and nearer the ankle, right foot developed a red slightly swollen area. It is painful when I flex my foot as I walk or run.

I rocked the up-hills. I think it's an over-use injury, but no sure. What kind of strain can this be?

I plan on icing it tonight and taking it easy before my next race this sat., which will be flat, but I'm concerned. Anyone have any ideas on what the heck I did to my foot without even knowing it?

No replies, but if anyone ever has this same Q, I found my answer. It's posterior tibial tendonitis. Anti-inflams and rest for me. No 5K this weekend.

well thats ashame. Rest easy and take care of your self! another 5k will come around and hopefully you will be able to do that one