I haven't raced with strep or even a bad cold.  If your doctor cleared you then you have to make an individual decision based on how you feel on the day of the race.  Keep in mind that you may need to slow down.  Also you'll need to keep a better watch on your health immediately after the race, since it can depress the immune system somewhat.  (Though that's more common at the marathon distance.)

Len

I would make it a race day decision.  Wake up early and prep to go to the race.  If you really feel under-the-weather then I would just sleep in.

If you do race, just do not race it.  Take it easy and see how it goes.  If it was me, I would do the race  =)

I have raced many times with bad colds - cough, congestion, and/or sore throat.  I actually do alright even with bad colds.  Once I was coming down with the flu, but didn't know it at the start of the race.  During the race I wasnt running well, much slower than usual and I didn't know why.  After the race (LV marathon), it hit me hard.  Almost immediately after finishing.  I was sick with the flu for over a week.  I think that marathon prolonged the illness.

Oh no, Alison! I'm so sorry to hear this!  I was thinking about you yesterday but didn't realize you were sick.

Did you run???

I ran my first Half with a cold, I just took meds and cough drops beforehand.  Once I started, it cleared some of it out and I did ok.  My time suffered a little but I was happy to finish since it was my very first race ever.   I ran my 1st 10k with bad allergies, couldnt breathe through my nose and had lots of drainage.....once again, it affected my time but I made it.