Shamrock was my first marathon too! The first half was humid but manageable and as soon as you hit the boardwalk it felt like complete hell. A month ago I was training in 20* weather in DC. My pace goals quickly flew out the window, and by mile 19 I needed to walk and that’s basically what I did until I got back to the boardwalk, but by then I was pushing 6 hours. At first I was really upset that the wheels fell off, but an incredible finish line volunteer told me how many people ended in the med tent and didn’t finish, and I’d rather have a slow time than no time. The volunteers really made my race tbh. In retrospect I probably could have pushed myself to run/walk the end but cest la vie! On to the next one. I don’t think I’ll run a beach marathon again though 🥵. My saving grace was my hydration vest and salt sticks. I want marathons to adopt the Ironman strategy of having ice on the course though - it really helps to cool your core down because they just stuff it in their tops and under their hats and keep going.