497.11 chains per hogshead.
The chain was a length measurement;
Surveyor's chain, also called Gunter's chain, measuring device and arbitrary measurement unit still widely used for surveying in English-speaking countries. Invented by the English mathematician Edmund Gunter in the early 17th century, Gunter's chain is exactly 22 yards (about 20 m) long and divided into 100 links.
The hogshead was a volume measurement that was extremely variable;
A tobacco hogshead was used in British and American colonial times to transport and store tobacco. It was a very large wooden barrel. A standardized hogshead measured 48 inches (1,219 mm) long and 30 inches (762 mm) in diameter at the head (at least 550 L or 121 imp gal or 145 US gal, depending on the width in the middle). Fully packed with tobacco, it weighed about 1,000 pounds (454 kg).
A hogshead contains about 300 L (66 imp gal; 79 US gal).[1]
The Oxford English Dictionary (OED) notes that the hogshead was first standardized by an act of Parliament in 1423, though the standards continued to vary by locality and content. For example, the OED cites an 1897 edition of Whitaker's Almanack, which specified the number of gallons of wine in a hogshead varying by type of wine: claret (presumably) 46 imperial gallons (55 US gal; 209 L), port 57 imperial gallons (68 US gal; 259 L), sherry 54 imperial gallons (65 US gal; 245 L); and Madeira 46 imperial gallons (55 US gal; 209 L). The American Heritage Dictionary claims that a hogshead can consist of anything from (presumably) 62.5 to 140 US gallons (52 to 117 imp gal; 237 to 530 L).
Eventually, a hogshead of wine came to be 63 US gallons (52.5 imp gal; 238.5 L), while a hogshead of beer or ale is 64 gallons (250 L if old beer/ale gallons, 245 L if imperial).
A hogshead was also used as unit of measurement for sugar in Louisiana for most of the 19th century. Plantations were listed in sugar schedules as having produced x number of hogsheads of sugar or molasses. A hogshead was also used for the measurement of herring fished for sardines in Blacks Harbour, New Brunswick.
So;
497.11 x 22= 10,936.42 yards or 131,237.04 ft or 24.8555 US miles.
1 hogshead = 79 US gallons so 3.178 gallons per mile
:drink: