Finally had a chance to ride the river. 4 of us left Salem headed for Eugene. 192 miles round trip. Calculating time, and fuel range based on a map didn't quite work. 10 miles up from Corvallis, we realized we wouldn't make it for daylight and turned around. We all carried extra fuel and stopped for gas on the way. Lots of rafters, and enough shallow water to make it interesting. 128 miles total. Thanks guys for your company.