Just another thought...what kind of gearing does your bike have? You said it is a touring bike, so I hope nice low gears?
With out going out and actually counting the teeth, I'll say I'm set up for low gears... on all 4 of my bikes... tripple rings and plenty of cogs! Thanks
You might want to join Bike Journal (www.bikejournal.com) to keep track of your mileage. It's a motivator for me. You can be on the Team Estrogen team and contribute to our team mileage goal!