Yes its around a 10 hour round trip. if I remember correctly we were picked up at around 6am, done the rest of the pick ups and then after about an hour stopped for breakfast (included). The next stop was at a service station about two hours later then onto Pammukale arriving around 11am. a couple of hours here, enough time to see the pools, have a swim in cleopatras pool (pay extra) and a walk around the ampitheatre at Hirapolis and on to a late lunch (some trips its included others you pay a set price).
The return journey is marred by the carpet factory stop
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I would advise unless you really want a carpet dont go any further then the loom room. Step any further and the hard sell starts. This was the one and only time I have felt intimidated in Turkey.
I think we got back into resort around 7pm. So it is a long trip but really worth it. We had a local english speaking guide who not only gave us the "official" blurb, she told us stories of how life really is for a young modern woman growing up in a muslim country. We did book this trip with the rep but you can book locally.