The whole point of all these extra rules and options in PTW is so that you don't have to play a 27 hour game online...!
Try this -- get a couple friends together, and play on a Tiny map, in Turnless or Simultaneous mode, with the fast production option, and regicide.
You run into each other pretty damn quick. I even had one game end in 5 minutes because someone's king was out scouting and got nabbed by a few warriors.
But realistically this game plays in about an hour, depending on how long before war starts and the like. Trading is fast and furious. Though I haven't made it to the third era. (Which is fine -- that's when the game bogs down if you ask me.)
We've also tried it with simultaneous mode but no turn timer, and everyone on their best behavior to keep the turns moving relatively fast. Easier to request and take breaks as necessary.
--Yelof