A University of Wisconsin-Madison chemistry professor crossed the finish line in just over nine hours Sunday at Madison?s annual Ironman triathlon, where thousands of family members, supporters and volunteers packed the streets to wildly cheer on approximately 2,900 competitors. Thomas Brunold, 43, is a chemistry professor at UW-Madison. He has crossed an Ironman triathlon finish line 12 times, and this year he finished tenth overall and first in the amateur division.