Basically, the problem is that this guy appears to not be following the rules for trail races.
See
http://www.trailrunner.com/news/trail_etiquette.htm for some suggestions, such as
"Involve the community. Make sure that you secure all permits, permissions,.."- 'nuff said.
"All the associated happenings of a trail race “event” add up and contribute to the total impact"- 200 runners could cause problems, especially if blowdowns aren't cleared beforehand. I seriously doubt anyone but the trail clubs would be cutting up downed trees before the race.