Your running socks will be your new best friend. 

You have invested in your new shoes and signed up for an event, do not allow blisters or sore soles come in the way of your new PB!

Made of quick drying material, running socks are especially designed to wick sweat away from your feet and keep your feet dry and blister free.

Personally I would not go for a run without my running socks, and I will watch the washing machine to make sure it doesn't eat one of my favourite pairs!