11 miles each way ... previously I was riding a 9 mile route with many long hills and lots o' traffic, until a friendly (rare around these parts - most MD cyclists won't respond to a nod) fellow cyclist showed and rode with me a new route (thanX Josh!) The new route takes me about 40 +/- minutes. The 2 extra miles doesn't make much of a difference, except my AVG MPH is better!
Also, check that those boasting 20 MPH AVG probably don't have many hills - LOL.