The son of Electioneer and Manette, Arion was bred and foaled at Palo Alto Farm in California in 1889. As a two-year-old he lowered the trotting record for a high-wheel sulky to 2:10 3/4. A short time later, he was purchased by J. Malcolm Forbes for $125,000, the highest price ever paid for any horse at that time. At four years of age, in the hands of John Dickerson, Arion took his mark of 2:07 3/4. He was then retired to Forbes Farm. After the death of Forbes he was purchased at auction by M. W. Savage. A year later, upon Savage's death in 1916, Arion was sent to Kentucky, where he died in 1917.
Published in the Harness Racing Museum's 1994 book, The Immortals