US 20 - The Longest Road in the US - 3,365 miles.

I came across this road in a post on Facebook today. US 20 is known as the longest road in the country at 3,365 miles. I've linked some articles on the right.
I thought I'd try to map out the route. Because I have a 50 waypoint limit, I've created two routes that total 3321 miles. Clearly, there are a few errors that I'll have to track down time permitting.

If you notice where I've made errors please let me know in the comments below.