I ran this in 2009. I still have the link to the results and photos (thanks, gmail archives). It looks like he didn't start that far back for this one:
Since there were only 240 male runners and 138 female runners in the marathon, the 45 seconds it took him to cross the start line would put him right at the back of the field as per his usual MO. Look at the net chip - gun times for the slowest runners. No more than 45 seconds.