Join ODR on a mid-week 20-mile bike ride and swim day near the Rhine River. The group will ride an easy loop from the lake to the Rhine River and back. After the ride, we will have time to swim, eat, and enjoy summertime at the Strandbad Rulzheim. Good physical fitness is required, and you must be able to ride a bike for at least 20 miles. Participants must be 16+.