Late entry here - I did 11km on Saturday morning, my first run over 10k for ages due to general time-poverty. I fell in a hole at the end, not in the running sense but literally!
At the end of my run on the beach I walked into the waves up to my calves to cool down and splash around, and didn't realise there was a rock close by that had all the sand around it pulled away buy the tide and I went from calf-deep to waist-deep in one step (and possibly squealed a little).
Hope the 10k went well Hannah!