We didn't have a map for this section of the river, so we didn't know exactly where we were camped. The guidebooks said that the float from Sourdough to Gulkana usually takes 12 hours and the record (as of 1994) was 7 hours. So with the high, fast water we expected to take around 9-10 hours. As we started the second day, we thought we had 6-7 hours of paddling ahead of us.