Hiya, I’m 27F doing a 20 mile charity walk in the Peak District next month and wondered if anyone had any tips they could share; anything that has proven invaluable to you in the past would be much appreciated!

I’ve been doing lots of training walks and am physically fit. I have proper boots etc so no worries there! Just any pearls of wisdom - snacks, clothing, maybe mentally too? Any hot weather tips would be especially helpful!

Thanks in advance!