I ran yesterday and I passed 5 blonde haired women and 2  brunettes. One blonde said hello to me (I know her so it doesn't really count). Of the four others, only one nodded a greeting. She was easily past 60 and her hair was no longer naturally blonde so I'm not really sure she can count either. The 2 brunettes looked at me and one smiled, one nodded. The 3 remaining blondes though avoided eye contact. One looked straight up in the sky as I passed her. I looked too just in case there was a UFO or something interesting to see. But there was nothing more than the overcast sky. Before I approached her she was looking straight ahead, so I waved and nodded. That's when she looked up. The other two were walking together. I passed them from behind and looked over to nod my greeting. They both looked right at me and continued their conversation as though I had made to attempt at civility. I soon got to my turn-around point so I passed them again, this time head on. I thought I'd try the friendly thing again (that's just how I roll) but instead of looking at me as I passed within 2 feet of them, they both looked off to the right avoiding all eye contact. So, is it a blonde thing. Are brunettes friendlier? Are we more sure of ourselves and therefore able to see the fellow runner/walker as a sister in exercise rather than a competitor or perhaps someone to be ignored. I certainly will be conducting further research into this. I wish I had recorded the hair color of the people who ignored me last time I rode on the trail. Maybe I should call Cambridge University. I think I'm onto something here.