A friend and I started out in Northwood in a park just after a dam. We started out around 10 am and went through Plymouth, Rock Falls onto Nora Springs. We reached Nora Springs around 7 pm. A day trip from Plymouth to Nora Springs would be a great trip for anyone. Small rapids and limestone cliffs! We stayed overnight in the park near the dam in Nora Springs and were on our way around 8-9 am. We headed to Greene and got there around 7:30-8 pm. I believe the total miles were around 53. It was very fun and I would recommend it to anyone.
There are a few sections with electrical fence so be careful. Especially from Northwood to Plymouth. After that there was may one time near Rock Falls.
We camped in Nora Springs write by the river.
We parked a vehicle in the parking lot near the large dam in Greene. We then drove to the police station to park our car in Northwood. A short walk to the park (head west from main street) and you will get to a park (I believe it is called Stensrud Park). There is a small damn that you can launch from .