The Recreation Trail circumnavigates Oskaloosa, and is approximately 14 miles long. Remember to be courteous of other users when riding the trail. Use caution when entering or exiting tunnels along the trail -- these have blind spots where you may not see oncoming users until you're right on top of them.
County Roads for Cycling
Although County Highways T65 and T39 are the obvious choices, other roads may be suitable for you. What roads are suitable will depend on your comfort level and confidence in your biking ability. Scout a potential route first, to make sure you are comfortable with it and its traffic.