The world record as the fastest horse in harness was held by the great pacing mare Pocahontas from 1855 to 1867. (record broken by Dexter) Born 1846, she sold for $30 that year, $51 in 1850 and $135 in 1852 as a sturdy horse who pulled logs in a four horse team. Her owner noticed she had unusual energy, and in 1853 she was entered in her first race in Cincinnati and won at 2:40.
By the time Dexter passed her, she was setting records below 2:20. She foaled the famous racer Tom Rolfe and even won races with foal. Bought by Robert Bonner for $40,000, she ultimately ran an unofficial race of 2:08 3/4 in retirement, many years before that time was met officially