Thanks, Grog -- I definitely need to get into fat-burning mode. Thanks for pointing that out.
Fortunately tonight my husband led the way and took us on a fairly flat ride (2.1 miles). I could have kept going but it was getting dark (plus he had just mowed the lawn in 95 degree heat and I barely convinced him to ride at all). But now that I see that particular route, I think I can double it next week w/o too much prob.
Also, I'll be able to ride farther when I have an odometer, I'm pretty sure. Just seeing how far I've gone and getting into that "just a little further" mode will motivate me.