Below I have listed 3 images, that are part of my image collection. One image is one I took in Cancun, the other two are images from Pixabay.
Here is the original image, that I took. I choose this to represent the open water swim portion of the race, and because it acts a good background. This image is from Pixabay, I have used this as the obvious nod to cycling, which part of the sport. This portion occupies the most time. of the actual race https://pixabay.com/photos/racing-bike-bike-handlebar-bicycle-598195/This is a texture from Pixabay, I liked the depth, so I overlaid it and lowed the opacity to give it some texture and grit. https://pixabay.com/photos/texture-roughcast-plaster-wall-1504364/