Yike! I'm certainly glad you responded, otherchelebi. My wife mistakenly thought Gelibolu was on the Bodrum peninsula. It's no longer in our plans (for obvious reasons).

So, back to reality! The trip will basically begin in Izmir with a rental car. We'll end up in Antalya because it's convenient to Termessos (which we want to see), and a good overnight point before returning to Bodrum (we won't be doing any sightseeing in Antalya, because we've already been there on a previous trip).

We won't be taking the ferry to Rhodes (again, we visited on an earlier trip), so it'll be back to Bodrum from Antalya. If I read your response correctly, the trip from Antalya to Bodrum (via Fethiye) would be about 7 hours. This is not a problem for us, but since we would have seen the coastal sights on the way from Fethiye to Antalya, it looks like there is a scenic inland road back to Fethiye (via Korkuteli). Perhaps we could actually see Termessos on the way back to Bodrum from Antalya since it also appears to be on that road.

So if we deduct a couple of days from your estimate (because we eliminated Gelibolu), that leaves about 15 days. We were initially estimating about 10 days (not including the travel day from Istanbul to Cesme via Izmir). We're going to extend that at least a couple of days. I don't anticipate that we'll spend 3 hours at every site (based on our travel history), but we we'll allow adequate time for the sites that we're particularly interested in. If we can talk the rental car company (probably Hertz, because we're Gold Club members) into being flexible about the return date, we can also be flexible if necessary.

Thanks again for your help.