Triangulate my position based on driving distance and times.
far.to
far.to
Your additional "create your own" link makes this clearer.
It would be nice if it was more obvious that the URL is referring to a specific location--perhaps provide the option to "name" the location? This would enable you to be more verbose with "How far away are you from _a seller in San Francisco_?" for example.
Even changing the wording/layout to something like might help:
Heading: How far away are you [from]? far.to/2i Enter your address and you can find out how many miles and how long it would take to drive to this location.