It's hard to tell but I think there's a faint line on Dudley Street in Boston. Successful sustainable development? I think so. I hope the viability of sustainable urban development catches on!
http://www.dsni.org/

"The farther you get away from rich coastal San Francisco, the less people are using Runkeeper on their smartphone. "

FTFY

You forgot about crime, people are less likely to run in areas where they could gets mugged.

Hrm, something designed for $200+ iDevices with $20+ in app modules ends up being a tool for the wealthy.

Would you like to hear of my distress that the trunk of my lamborhini is inadequate for my family's weekly grocery trip ?

@3 Thank you. This same content was posted last week and the same point was made then. This data gives us absolutely no information on the jogging habits of non-Runkeeper users.

Morning News, last Thursday.

"...by the number of its parks or trees." Actually, it used to be a truism that the parks of the inner city were overrun with muggers and other criminals. Their abundance, and that of the trees within, gave them shelter and were not places where many chose to jog and bike. If that's different today, it's because of gentrification.

As far as health goes, poor people can be healthy too, but it's hard to eat well when most poor neighborhoods are food deserts, so that's problem number one. If you don't eat well, you don't often feel like any kind of exercise, regardless of whether it's safe to go outside or not.

The NYC map is BS. It's basically the marathon route because 30,000k people running the same route and all tracking it (you know they are!) are going to drown out all other runs

or people just like to run along the water where the nice views are?

I think we need to start addressing the looming issue of "Information Inequality"... the rich clearly are creating/have more information than the poor.