One comment in the link says there actually was a timing mat at the turnaround point: "Fantastic investigative work. HOWEVER. Not sure why you had to do this.

One comment in the link says there actually was a timing mat at the turnaround point: "Fantastic investigative work. HOWEVER. Not sure why you had to do this. You see, I ran the race. And you wouldn't know this because you didn't, but there are four timing mats - start, finish, 10K and turnaround (about 9 miles)." the answer from Derek is: "I am aware of the timing mat at the turnaround. The timer did notice this, and she was initially DQ'd but was added back in until they went through everything. In every race there are missed mats - sometimes they malfunction, or they aren't placed across the entire course and are missed by an honest runner."