Off Topic - Road Route

Okay, so I got this road bike the other day. I hope it will help my endurance for mtn biking. So, does anyone have a suggestion for a route, perhaps in the 20-30 mile range leaving from West Bethlehem that doesn't have a lot of traffic? I just want to get out for a quick ride after work, but leave from home.

Feel free to PM me, I am well aware this is a mtn biking site.