Within an hour's drive are some population centers, to include Indy, and then there's the state line with Illinois. Looks like U.S. 24 is kind of a straight shot to the state line..
As members here posted in previous threads, BG could live hours away, and still have been home for dinner. I agree with folks here who have noted there are parts of Indiana which have major drug and crime issues in general, but that's true of a lot of rural America, these days, I think. BG could be from a fairly sizeable distance from Delphi, I guess we'll find out at some point in the future.
My hunch is BG had to get out of there w/o being seen, at least up close. Most likely drove straight to his residence, so as to prevent any situations where he could have been ID'd within a given distance of Delphi. Another thing to consider is a vehicle, he's not going to be driving some junk vehicle which could break down on the way home. Or maybe he had an accomplice who drove him. Unlikely, but plausible.
Yes. He could have been from anywhere, but most criminals stay close to home---unless they have an occupation that takes them across state. The Amherst rapist/killer being a perfect example. And the most direct route to the location of the murders would be had from Lafayette. 24 might take you to other states--but it doesn't take you right exactly to the trail where these girls were killed. Both State Road 25 and interstate 25 take you from Lafayette to the trail. State Road 25 is where the primary parking lot for that trail lies.
Lafayette is so close. You could go to Delphi and be back in an hour.
Just something to consider.
There are so many indications that this guy has some familiarity with the area--He doesn't appear to have been afraid of running into a property owner (or he got lucky). He made his escape without notice. He found the most isolated spot, that is also a public trail that one can imagine - looking at a map of the area.
He's either really lucky, or he knew the area. it's hard to imagine that this would be true of someone coming from a great distance. But who knows? Maybe he's a trucker and passes through regularly.