I ran across Indiana utilizing the Old National Road from Ohio/Indiana state line to Indiana/Illinois state line in 47 hours 35 minutes and 5 seconds. (Began at 9:10.46 pm on 10/7/2016 and finished at 8:45.51 pm on 10/9/2016 central standard time)
Figure this may be an OKT & FKT for a self supported crossing of the Hoosier state. (Thanks to Andy B. on this site for the idea of giving an effort like this a shot!)
I utilized a Spot Tracker to validate the attempt and had the same witness at both the start and finish.