Will a late day start ruin my race?

I woke up with some calf soreness and I figured it related to yesterday's running in the Hattori's. Although I've been running in low shoes like the Kinvara 3's and my Brooks test shoes, neither pair offer a zero drop experience like the Hattori's. The difference is only 4 mm, but that could be enough to aggravate my calves. After thinking about it more, I've concluded that the soreness actually came from running at speeds I haven't attempted for well over a month.

I'm curious to see how I will do during Wednesday afternoon's race. I can't think of a time when I've run late in the day and thought I'd performed particularly well. I've done all that I can to maximize my readiness, including Saturday's 6 miles and yesterday's intervals. Two days of recovery from my weekend running will get me to Wednesday. Since the race is at 6:00 PM, I'll get another half day's rest. Perhaps that additional recovery time will counter-balance the performance hit that I expect to take from that late day start.