In today's world, not much thought goes into where our food comes 
from or how it got to the grocery store.  We are so spoiled with 
convenience and expect the store to have on hand exactly what we are 
looking for at a great price. But over 125 years ago, cattle drives  
were a major economic activity in the American 
west.  Approximately, 20 million cattle were 
herded from Texas to rail heads in Kansas for shipments to stockyards in
 
Chicago and points east.[1]
 It was this activity that helped to feed the United States citizens and
 keep a good cowboy employed.  Cattle drives, on a much smaller scale, 
still occur in parts of the western United States and Australia.
Long-distance cattle driving was traditional in Mexico, California 
and Texas, and horse herds were sometimes similarly driven. The 
Spaniards had established the ranching industry in the New World, and 
began driving herds northward from Mexico beginning in the 1540s.[2] 
Movement of cattle
Cattle drives had to strike a balance between speed and the weight of
 the cattle. While cattle could be driven as far as 25 miles in a
 single day, they would lose so much weight that they would be hard to 
sell when they reached the end of the trail. Usually they were taken 
shorter distances each day, allowed periods to rest and graze both at 
midday and at night.[3]
 On average, a herd could maintain a healthy weight moving about 15 miles per day. Such a pace meant that it would take as 
long as two months to travel from a home ranch to a rail head. The 
Chisholm trail, for example, was 1,000 miles long.[4] 
Today,
 cattle and other livestock, are trucked to meat processing facilities 
and the complications of the cattle losing weight before arriving at 
their destination have been virtually eliminated.  Cowboys who worked 
the trail have been replaced by the truck driver, who can travel 
anywhere from 700 to 750 miles a day.
Moving
 cattle today, requires one driver, a semi-truck and trailer with 
eighteen wheels and an open road. Beef, the finished product, can 
literally be in stores within a week. 

