I do know bucks will travel some, 5 miles seems a bit extreme or on the far end of what would be considered normal for whitetail. I wouldn't bat an eye about a couple miles though.
I hunt on the same ranch as Ramsey and have been there around 20 years. 5 miles isn't the norm for a whitetail's range, but it isn't uncommon on this place and we have documented them even farther with TC. We hunt on a 10k acre ranch and know some of the neighbors.
30 years ago, there was very little cover and few deer in that area. Dee naturally roamed and if you bumped one, it would run 2-3 miles to the nearest cover. The theory is that the roaming behavior was bred into them over the generations, similar to that of a retriever or pointer. Not sure how much stock I put into the theory, but it is nothing to watch the deer travel 2-3 miles in one morning hunt from certain ridges. That afternoon, you can watch some of the same deer travel 2-3 miles the other direction.
In Kansas, which has similar terrain (with bigger trees) as our area used to have, it is the same. Bucks being located or killed over 5 miles from a location they were seen isn't unheard of.
In both instances, you still have the deer that seem to pick an area and live their life there. I have multiple years of the same buck in the same area.
Terrain, herd, food sources, rut and dominance play a big role IMO.
I think a lot of people would be surprised how far the buck they are hunting will actually travel at certain times of the year.