In reply to TheDrunkenBakers:
I always wear a cap when running in the summer and the sweat soaks up, and is absorbed by the beak, and drips off the end. Better than it running into my eyes.
I always get a couple of patches below my chest, just below where my HRM strap is.
Going out for a long one tomorrow (probably 5 hours or so) and so will take a CamelBak - the thing will be soaked through, and encrusted in salt by the time I'm finished.
Nice topic