IIRC from what I read earlier, the blue jacket guy, who is the one who is the distance runner, never ran the race. He had planned to, but got there too late. That would explain why he looks p.o.’d in the photos (assuming he is not a bomber).
http://i.imgur.com/qegVHk7.jpg
http://deadspin.com/the-boston-bombing-witch-hunt-bags-another-innocent-kid-476001019