You mean something like this?
http://www.gmap-pedometer.com/m/?r=6801583&rf=1
I'm mostly going off the maps rather than satellite images. Normally I'd take a closer look at the roads, but this was something that I did on the fly.
What you're looking for is interesting roads. When you're planning a circuit, you have to keep the whole thing in mind, but here you can focus on the individual parts. It's just a case of connecting the best bits together in the most interesting way. The only real limitations, as they were, is that competitors have to be able to access the stage start and leave without driving through the stage (a field of fifty cars can take up to three hours to run), the stage cannot be more than fifty kilometres without a special dispensation from the FIA, and the average speed cannot be more than 130km/h. In terms of overall rally length, events are rarely more than 300 competitive kilometres and almost never more than 350km, but there is no limitation on liason stages (driving from one special stage to the next). These days, one day of a rally will typically have five to eight stages - depending on the overall length - with most stages run twice; once in the morning and again in the afternoon. Very long stages will usually be run once.