This is one of the images that made me realise the thrill of sports and especially athletics photography. These long distance runners do not attract too much attention in their first rounds. The group of mostly Kenyan and Ethipian ruunners mostly sticks together, but in the last 4 rounds the tension grows and faces start to show some emotion. For the photographer is is relatively easy once you are in the right spot, because if you blow things there is a second chance the next round. I have good memories of these specific games because it was the first time I hired a professional lens (Canon 70-200 L IS USM for who is interested) and what a joy it was to use it. The lens is quite heavy of course, but I see that as an advantage: it reduces camera shake and you can skip the gym. Uhmm I don't go there any way, but still....