Pretty much all over, I tried to find some info from a blog on JSonline website, this is from September and I believe there may have been more but I didn't search past Sept.

Five of the cyclists killed in 2011 were struck from behind by motor vehicles. In the other four fatalities, the cyclists biked into the paths of cars, according to police reports.
The most recent fatal crash occurred on Aug. 19, in Kenosha.

I think the total hit from behind was around seven but like I said I didn't check all the archives from the paper. I think one of the riders was a LBS owner in the area and was out training with another rider when they were both struck and the LBS owner was killed.