I rode with the Mt.Juliet women's group last year. The ride left from a park over by I-40. Most of the rides were rather hilly but not much traffic. Also the main road from "downtown" out to I-40 has a new bike lane. Depending on which part of Mt. Juliet, you can always head toward Gladeville or Lebanon/Watertown. My sister lives in Mt. Juliet and I can get a great 60 mile round-trip from Smyrna via the Glade. Check the Veloteer website for some of their favorite routes. http://www.veloteers.org/