Bicycle Austin forum

Glad you asked - I've been wondering that myself.  I started to figure out a route from Austin to College Station, and this is what I found so far:

Overall directions:  Austin to Manor to Elgin (see below) and get on FM 696 going East through Lexington to Caldwell.  At Caldwell, take FM 166 East through Tunis and take whatever route into College Station you want.  (FYI, this also happens to be the route that Google Maps' bicycling directions gave when I checked.)  Total is pretty close to 100 miles.

I strongly recommend against riding on TX 71 or 21 (which is how I would regularly drive to College Station from South Austin).  A lot of these roads have little or no shoulder and fast traffic.  I think these are dangerous roads to drive, let alone to ride.

Austin to Elgin:  A couple months ago I went for the following ride to scope out how to get out of Austin to Elgin, and I recommend it.  From downtown go East on MLK Jr. Blvd.  After crossing US 183 (but just before the TX 130 toll road) go left/North on FM 973 to Manor.  In Manor, go right/East on Old US 20 (parallel with the train tracks), which turns into Littig Rd.  Take this into Elgin.

I'm interested to read more suggestions...

Jason