Birdy I have no experience with Longhorns they are pretty tough. Usual trail herd distance was 8-10 miles a day but they were grazing as they went.
On a stamped longhorns have been known to go twenty miles but were completely played out and not fit for much. Certainly not a continued drive.
What we are looking for is how far and fast can you push a herd of cattle and keep going for more than one or two days.
From what I have read from Goodnight, Dobie and others about 15 miles a day for four days is about the best that could be done or hoped for. After that what were not dead would need two days to recruit.
