I have calculated my Mississippi River mileage conservatively at 2323 miles.
This is calculated using the MN/Dept. of Natural Resources and U.S. Army Corps of Engineers river map mileage. I have added for my miles across Lake Itasca (4.5 miles) and for the longer route I took across the three large northern Minnesota lakes (2.1 miles) along with the route I took at the river delta.
I did not add for: the city harbors I paddled into; two short sections I paddled twice; irregular routes common to stand up paddling; or routes taken to avoid tows and their wakes. My actual mileage was likely 1-2% higher if there was a way to accurately record all of these items .
I hope this answers everyone’s questions. Thank you all for the amazing support!