Canada Road leads right into Mountain Home Road -- when you get to the intersection of Canada Road and Woodside Road (84), just cross over Woodside Road and bear just a bit to the left, to begin riding Mountain Home Road.
On Mountain Home Road, it's a beautiful ride to Portola Road. Bear left onto Portola Road. Shortly afterwards, Portola Road merges with Sand Hill Road. To the left (toward the bay) is Stanford University (down Sand Hill Road). To the right (toward the hills) is the intersection of Portola Road with Old La Honda Road.
On Old La Honda Road, it is approx. 3.5 miles (maybe a bit less) to Skyline.
Then it's left on Skyline to the intersection with Alpine Road. There are great vistas along here, especially from the top of Windy Hill, and from the Russian Ridge area, just before Alpine Road -- and from segments while riding along Skyline.
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The rest of the ride (from the airport to Woodside) has some options.
Once you get out of the immediate razzle-dazzle of the terminal area at the airport, it is surprisingly simple.
You want to get out and away from the terminals and onto McDonnell Road. It is a frontage road that parallels the freeway ON THE BAY SIDE. If you go left (southward) on McDonnell, you soon come to some roads that take you across the freeway (101). You can take the first one, or you can keep going (and riding along near the edge of the bay) and take a later one across the freeway. [I just winged it through that area, so I can't give you the absolute best route. I can only say that it is pretty simple. After going under the freeway, and up one of the main streets that go across the freeway, you can get off the main drags (the main streets that are lined with small businesses and shops), and onto parallel side streets that run through residential areas. I'm sure if you called some of the local bike shops, they could tell you the 'best' routes. Usually local cyclists have worked out the quietest and best residential streets for bicyclists, in these sorts of areas. You can find them on local bike maps, or online (in some cases). Or you can just wing it. There are local bicycle coalitions and other groups who could probably help-- but it probably isn't worth the trouble of doing so; it's a brief ride and it's hard to get lost, as long as you head up toward 280 and realize that you will need to be on one of the fairly major roads when you are ready to cross (under) 280.]
It isn't terribly far from the freeway, near the airport, up to Skyline (maybe two or three miles). Basically, you just want to head across the freeway (101) and keep going away from San Francisco Bay, setting course toward the west, and up toward the hills and 280 (Junipero Serra Freeway). Skyline is near 280, in this area, and parallels it (and both of them run approximately parallel to the 101 freeway, in this area at least -- they are just a couple of miles or so to the west). The Crystal Springs Trail system also more-or-less parallels Skyline and 280, and is a bit farther toward the hills -- toward the west, and away from the bay.
Once you get up there, you want to tend left and head southward, toward Crystal Springs Reservoir. There are some long, beautiful bike paths that run along the lakes. The San Andreas Trail and the Sawyer Camp Trail together are sometimes called the Crystal Springs Trail. (These are the scenic, no-cars way to ride south. They are also slower than the some of the direct, cars-included routes. Whether a person wants faster-but-less-scenic or slower-but-more-scenic is up to each....)
From the Sawyer Camp Trail, you continue southward and connect with Canada Road, and follow it to the intersection with Woodside Road (84) -- and then cross over 84 to Mountain Home Road, and proceed as described above.
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If you want to take these paved bike paths around the lakes, it is best to get some good directions to the trailhead, or have a good map. You could also ask local cyclists and joggers.
Here is a description of the Sawyer Camp Trail, along with directions on how to catch the trailhead at the northern end, and then head south (
"The path finally terminates on Hillcrest Boulevard right next to Interstate 280 in western Millbrae."):
Path
Starting from the south, the trail begins in a parking lot located just north of the Crystal Springs Dam. This southern end of the trail located on the east side of Lower Crystal Springs Reservoir and it generally heads north parallel to the long axis (i.e. north-south) of the reservoir. The section of the trail north of reservoir passes by dense groves of trees before heading east on the San Andreas Dam. The last segment of the trail briefly parallels the eastern shore of the San Andreas Lake before the path heads northeast and ascends the Bay Hills. The path finally terminates on Hillcrest Boulevard right next to Interstate 280 in western Millbrae.
Recreation
Some of the most popular recreational activities on the trail include walking, jogging, cycling, and rollerblading. Dogs are not allowed. Much of the trail is marked with a center stripe to minimize conflict with those traveling in opposite directions and distances from the ends of the trail are indicated on signs every half-mile (800 m).
Nature
Virtually all of the trail runs alongside the scenic Crystal Springs Reservoir. It is common to see ducks, deer, and rabbits.
Here is a video of what some of that trail system looks like:
http://www.youtube.com/watch?v=15_Eg...17B05B&index=3
Those lakes are long and beautiful.