>>12831173-speed? I mean, you can tour on a fixie, but it doesn't make it a good idea. When I tour I use the full range of my 3x9. You can also tour on shitty used mountain bikes. It's just a question of what comfort, speed and reliability are worth to you.
What gear do you want to know about? I've put around 50,000 touring kilometers on my bike. Last weekend I rode 300 km. The picture is from my 1100 km jaunt this march.