I was not in Boston today. My marathon time last year would have needed to be nearly 30 minutes less for me to achieve a qualifying time. I was safely at work.
Safety is something you think about a lot as you prepare for a marathon - safety from injuring yourself while training, safety from over-doing it on the day, getting too hot or too cold or too dehydrated, maybe even traffic safety getting there or getting home.
Not this though.
Not my photo! It is by Flickr user hahatango. The full set is here.
So easy to imagine myself amongst those running down that road - my friends and family trying to find a spot to watch from - all concern for my welfare and then happiness at seeing me nearing the finish.
So easy to imagine, and yet unthinkable too. My thoughts and prayers are with those for whom that was a reality today and for all who were affected.