Originally Posted by
MikeRides
12 miles is nothing. A 40 minute max ride if you're in decent shape. Depending on the pop. size of the city and time of day, to drive 12 miles can take just as long.

Gotta agree... I felt that 12 miles was "just right." Any shorter and you don't feel like you're getting a good workout. Any longer and it starts to get old... Although one year I was making a 30 mile commute... it worked, but only because the hours were very flexible.