The Down Tow Up Flow half marathon for me this morning, along the Thames from Windsor to Marlow. Although the sun wasn't out it was very sticky and muggy and distinctly warm. I did sweat copiously. I ran well and felt fine until mile 11, when the pace dropped off and I struggled a little. But still, came in at 1:57:45 so well on the right side of 2 hours, which is what I was shooting for, given the heat.
Not just me suffering because even with that slow time I was still well inside the first half of the overall field and the V50 male category.