I downloaded the latest version of GoogleEarth the other day. In the past I don't recall them allowing you to draw paths using the free version. This latest version however allows you to do so.
People often ask me where I ride on Sundays. Here's the answer . This route is about 65 miles. Depending upon how much wind is out there it normally takes me around 3.5 hours of riding time (not including the odd water stop) to complete this tour. There are a few really dandy climbs on this route; Del Dios Highway, Bandy Canyon, and Black Mountain Road. The one really nice thing about the ride is that there are a couple 15 to 20 mile stretches of road where you literally don't have to stop for a single light. It might not sound like a big deal, but it makes a big difference when you can ride uninterupted for and hour or so.
If you've got GoogleEarth on your machine you should be able to follow the link above, open the file with GoogleEarth, and play it.