Just a heads up, my understanding is that Woodbury County has an “Agricultural Preservation Zoning District” that prohibits any type of food or alcohol sales outside of city limits. As a result, there will be no food between any of the towns on Day 1, this includes any sales of water.
Day 1 includes some quite HILLY and LONG stretches such as 20 miles from Bronson to Anthon and 18 miles from Anthon to Battle Creek.
Hopefully some nice residents will offer free water.
However, I would plan on extra sustenance and extra water for Day 1.