3 peaks walk for charity

I will be doing the 3 Yorkshire 3 Peak challenge on a day this summer with my boyfriend. It is a 24.5 mile/39.2 Kilometer walk. I am doing this walk in order to raise money for two causes. One for St.Vincents a homeless and refugee charity I have previously volunteered with. And the other is Behind closed doors, a charity for the victims of domestic abuse.I have a minimum goal of £200. £100 for each charity and any money raised above my goal with be split evenly between the two charities.