finding flat, fast, certified 10Ks

Crescent City Classic, New Orleans, LA (Always the Saturday of Easter Weekend, For 2007: April 7). Certified and flat, but always the potential for hot, humid weather.

Sallie Mae 10K (Washington DC in late April, I think)

If memory serves me correctly the Gumtree 10k in Tupelo MS is a pretty quick course.

Kudzu, there's a website listing races that offer prize money. If someone wants to offer up that link, it would be a great resource.

One I'll plug is the MDS Nordion 10 km in Ottawa in late May. It's a great opportunity for anyone running 28 minutes or slower. It's probably not intense by American standards, but there are about 150 people under 40 minutes and there are about 5-10 people under 30 minutes. A lot of Canadian elites show up for this one, which I like.

The biggest 10k here in Toronto is downhill, so that doesn't count, but the Toronto Island 10k in September is a great race. It attracts the better runners in the city in the 35-40 minute range, and it's well-organized, flat and a great course.

The Reeds Lake Run in Grand Rapids is a pretty good one.

I had a thread going for this a few months back:

http://www.letsrun.com/forum/flat_read.php?board=1&id=1477224&thread=1477071

Also, I heard the Capitol Hill Classic 10k in DC in May is pretty fast.

Zoo Run 10k in October Tulsa, OK