The route has mile markers with the last being 22 but it makes more sense for the route to end at the sign posts for each county as shown in my photos as the trail extends slightly past the final mile marker. Miles 3.7-4.1 approximately are a re-route due to construction on the original route that has been closed for some many months. Although I doubt it will affect overall distance much if any, future attempts should be aware of this if they haven't used the trail frequently. Route currently does not have any active water sources due to COVID, so I carried 80 oz to start and it was enough to survive July heat in the south. Future unsupported attempts should maybe do the same, just to make an urban unsupported attempt interesting. Not sure if I can stipulate that but maybe just establishing something of a precedent. Just a note that it helps to start early as the first 8 miles or so are the most road-crossing heavy, so avoiding peak traffic hours is definitely helpful in not losing time at crossings.