Sunday's race at White Sands near Dunbar is fairly flat.
The terrain is a mixture of beach and grass trails. However, there are stretches of the route that are very stony... so spikes may not be the best choice. Ultimately though, as ever, choice of foot ware is yours.
LOCATION: This Google Map should help. http://maps.google.co.uk/maps?daddr=Unknown+road&hl=en&ll=55.988204,-2.467976&spn=0.054348,0.174751&sll=55.988252,-2.468061&sspn=0.027174,0.087376&geocode=FRBNVgMdo1na_w&vpsrc=6&gl=uk&mra=prev&t=h&z=13&layer=t