One of the best things I did to manage the heat during the London Marathon was wear a cooling scarf! WOW what a difference it made! I wrapped it around my neck and back and it helped me stay cool on a really hot day to run a marathon. It was super easy to use, I just drenched it in water at each water station and “snapped” it into place and it instantly cooled me down. Sharing the details in case anyone else wants one! LTKActive