Honestly, I don't have a favorite urban legend. I think they are all interesting and spooky. There was a documentary on Netlfix I watched last year that got into urban legends and trying to find the truth in them. A lot of them have some small basis in reality. But if you force me to pick one...then...
The Vanishing Hitchhiker. It's wide-spread and has a lot of variations.
A welcoming widow with a twisted appetite; a war-time evil lurking behind the face of a child; a father’s love gone horribly wrong; a deadly government solution; a new job with a demonic pay scale; a woman trapped in a mysterious house with no memory of who she is or how she got there. These are a mere glimpse of the terrors that lie in wait in this collection of horror short stories, sure to grip the psyche and torment the soul.
Grab on Amazon: https://www.amazon.com/dp/B085N7YCZ3
Though she's lived in Colorado for most of her life, she moved around a bit before settling there, previously living in Maryland, Oregon, and California, where she was born. She often misses the ocean, but the majestic and rugged Rockies are a sight she could never part with. Besides, in Colorado there's always a place to hide a body or birth a monster. What more could she ask for?
Find her online:
Amazon Author Page: https://www.amazon.com/Shannon-Lawrence/e/B00TDKPOAO/