Added info about the towpath
The Cuyahoga Valley National Recreation Area towpath(also about 50 minutes
from Oberlin) is really very smooth for a gravel trail. If you go to the
Ira Road Parking lot in the south part of the park near Bath, OH(just south
of Indigo Lake and across the street) you can take the towpath a short
distance north then get on the boardwalk over the beaver marsh. Waterfowl
and fly catching birds are usually present. This marsh is open to the full
sun so take a hat! http://www.nps.gov/cuva/index.htm The website has a
button near the top that says "view map" to see an excellent map of the
area.