This episode takes place in 3085.
John Hoyt reprises his role of Barlow from "The Gladiators" episode. In the series' paperback novelizations, "The Horse Race" appeared before "The Gladiators", so a different ape character was featured as the Prefect in "The Gladiators".
Production code number is B-511. Although this was the ninth episode in broadcast order, it was the eleventh in production order.
When the gorillas arrive at the blacksmith's home to threaten him and his son, the lead gorilla has a New York accent.
This episode comprised the first half of the third compilation movie "Treachery and Greed on the Planet of the Apes" released in 1980, paired with "The Tyrant".