thanks folks, i'm just reading up and getting to grips with these MM's, if i get this right, they dont give you the map/s until you start along with decription/s. And even then, when you get to the grid reference, the checkpoint can be anywhere in the 100m square, then you turn to description for pin pointing of the checkpoint, is this right? Also, this means you can only start planning your route literally at the start of the race when you get map etc?