I've now got about 350 miles on my Q. I've been riding exclusively on the rural roads right outside my house. As I've built my recumbent muscles and endurance my average ride has increased from 12 to 18 miles. All my routes have slight to moderate elevation gains/drops and I've seen my average speeds slowly increase.
I recently found a ride mapping website called Bikely (linked on the right) that I really like it. You can easily draw maps of routes you take, or plan to take, and get accurate mileage and elevation graphs. The idea being to share your routes with others. Their application is linked in with Google Maps and so you can see your route in map or satellite form. It's a free service.
I started looking at the maps and playing with routes. In our area there are a lot of dirt roads with varying conditions so after I created a few routes I decided to drive one and see if I felt it was within my ability level.
Below is the Bikely route map of the drive and then ride I took today.
And here's a graph of the elevation gains and losses.

I'm sure this will become one of my standard routes. I love it's challenge, the thrilling decent and the beautiful seclusion of Ramsey Road. Next time I do it I'll take some pictures, weather permitting.