Northern California - Visualizing my rides

I was curious to see what it would look like if I took all the roads I've biked on and highlighted them on a map. I have a pretty good idea in my head of which roads I've been on but I wanted to see them all at once and thus also see the areas that I need to explore more :)

So I combed through the various places that I've recorded rides and I compiled them into one KML file. The results aren't totally comprehensive - I have only been recording my rides with regularity for the past year or so and there are roads I've been on that aren't highlighted here. But it's probably at least 90% complete.

The routes are color coded as follows:
Blue = normal pleasure riding
Purple = commuting
Pink = organized century
Yellow = unicycling

Click any image for a bigger version.

Norcal overview. You can see a couple outliers which are the Tour of the Unknown Coast up north and the Auburn Century to the east.
http://scurvy.net/~bweir/kml/jpg/thumb-all-norcal.jpg (http://scurvy.net/~bweir/kml/jpg/all-norcal.jpg)

Zooming into the Bay Area. Marin centuries are at the top (I did the Mt. Tam loop one year and the standard century another year). Sequoia Century is in pink at the bottom.
http://scurvy.net/~bweir/kml/jpg/thumb-all-bay.jpg (http://scurvy.net/~bweir/kml/jpg/all-bay.jpg)

Zooming in closer and you can see some unicycle loops I've done.
http://scurvy.net/~bweir/kml/jpg/thumb-all-bay-detail.jpg (http://scurvy.net/~bweir/kml/jpg/all-bay-detail.jpg)

The next two are just the recent commuting I've done from Menlo Park to south San Jose (near Campbell). The first half of my commute is a no-brainer - just stick to Foothill Expressway:
http://scurvy.net/~bweir/kml/jpg/thumb-xilinx-commute-all.jpg (http://scurvy.net/~bweir/kml/jpg/xilinx-commute-all.jpg)

Here's a detail of the second half of the commute. All the surface streets are aligned in a grid and I need to cut a diagonal route through here. You can see I've tried a few different routes :)
http://scurvy.net/~bweir/kml/jpg/thumb-xilinx-commute-detail.jpg (http://scurvy.net/~bweir/kml/jpg/xilinx-commute-detail.jpg)

Finally, you can interactively browse (http://maps.google.com/maps?f=q&hl=en&geocode=&q=http:%2F%2Fscurvy.net%2F~bweir%2Fkml%2Fall_rides4.kmz&ie=UTF8&t=p&z=5) all this stuff in Google Maps. Spot the ones in Canada and San Diego!

Dude- this is very cool! You have covered a lot of ground!

That's really cool. My map would be really boring.

Oh! I'm sure We'd all like to see more yellow on your map. :p

That is sooooooo cool. I've wanted to do that with my Garmin files, but didn't know how. I want to ride every street in my town and have them be all highlighted.

Thanks for the feedback :)

Here's my basic methodology for creating this:
1. Get each individual bike ride in KML format

1a. For routes in Bikely, use the "Share" function to export as KML
1b. For routes on motionbased.com, click the "Google Earth" link underneath the route preview map to export as KML
1c. For other routes, draw it by hand on bikely.com and then save and export as in step 1a
2. Import individual KML files into Google Earth

2a. Create some folders under "My Places" to categorize the rides
2b. For each KML file, open it in Google earth. It will show up in "Temporary Places"
2c. Drag each route from "Temporary Places" into the appropriate folder in "My Places"

3. Apply styles to the routes. Right click a folder or ride and select "Properties" to change the line thickness, color, etc. You can apply styles to all subfolders if you want.
4. Save. Right click on the parent folder of all the routes. Select "Save Place as" to export as a KMZ file (this is just a compressed KML).
5. Upload KMZ file to a web server somewhere
6. Go to Google Maps (http://maps.google.com/). Type the url of the KMZ file in the search field to view it in your web browser.