This was taken on the straight where there is a series of undulations. As a result many of the bikes rear up in this dramatic fashion. It’s a case of trying to identify the likely spot where it’s going to happen and taking plenty of shots! When I first visited a motocross event I was struck by the fact that the spectators could get much closer to the track than is possible at circuit racing. Make sure that in addition to the normal telephoto lenses you take a wide-angle lens with you!