The top line on the above chart shows the elevations along the route of the 10k race. Note that as the scales are different (the x axis along the bottom shows distances in 1kms whereas the y axis up the side represents 20m intervals) the top line should not be used to infer any kind of gradient (i.e don’t worry – this doesn’t reflect the real slopes on the route!).
The bottom thin red section has been properly scaled to roughly reflect the true gradients along the course.
