Verbal sexual harassment is the most often mentioned reason why other women I know don't go running outside. The harassment effectively blocks women from enjoying public spaces in the same way as men.
I ignore it/laugh it off/ pretend to be listening to music. And the comments are not all lewd or nasty. In fact, some are probably done with very kind intentions. Sadly, mixed in with the other stuff it just becomes a barrage, of unwanted 'social' interactions, insults and advances. I'll cross the street if I see a group of men standing around.
The more I think back on the hesitation women I know have when I invite them to run with me this problem looms large both directly and indirectly.
"I don't want people to see me."
"I'm not in good enough shape for people to see me running."
"Running clothes are too embarrassing and reveling"
etc.
When I stared running I was very concerned that I would ~jiggle~ I didn't really, but the thought of small clothes and motion seemed like you'd be "asking for it" when it comes to unwanted sexual comments.
And there are a large number of men who interpret a woman running in just this way. You're asking for it. That's what they think.
From time to time I've gone back to the culprit and laid some feminist theory on him-- but, I can't tell if this just amuses the bastards more. (For at some level, it's all about provoking a response.) Also, I think I'll get hurt some day if I keep doing this.
So, what kind of action could one take? Try to start a march against street harassment? This website has an app that let's you record and share what happened. (along with a photo.) Maybe just talking about how women have every right to walk, jog and ride in public spaces will help. It's not your clothes, or what you were doing that caused the harassment.
Men, you can help by calling your "buddies" on their bad behaviour. Don't make an excuse that "what he said wasn't that bad." Sexual "compliments" often come across as harassment. If you stand next to a man who harasses a woman and you say nothing (in the moment or later) you really are giving that bad behaviour a stamp of approval.
From my perspective, running by, alone, it feels like the comment is coming from the whole group of men. So, if that's NOT who you are distance yourself from it. On my end the whole thing is just scary and degrading.
I'll do my part and try to have a sense of humor now and then, though really this impossible for a feminist.