Originally Posted by MariaMaria
I wouldn't run in cotton panties under anything, too sweaty. Choose some technical/wicking underwear (either cut like regular undies or like bike shorts). Look for fabrics like Coolmax or Dri-something.
Or skip the underwear layer entirely (under shorts, obviously, not under skirts
) A lot of runners I know prefer this. Actually, a couple of my pairs of shorts have built in pants so it would be odd to wear anything else with them.