This marathon I actually SOLVED a couple long-term chafing issues I've had! I'm so proud of myself!
OK, guys, just move along now because this post is for the girls.
I have a couple spots that my jogbras *always* chafe me in long events. I've tried all kinds of lubricants, etc., and they reduce it but never solved the problem.
This time I cleaned the areas (this probably only works for hairless flat skin areas cleaned free from oils, btw) and put a big 3"x2" piece of Tegaderm there.
I thought it would rub off during the race, but it didn't - it stayed put perfectly and worked like a charm!
Another tool in my long-distance arsenal!!! Not sure if it will stay on during a swim, though, but it's worth a test-swim. . . .