Eight Furlong is a measurement company. Our bespoke, veterinary-grounded equine biomech model reads anatomical landmarks on parade-day video, derives a disciplined set of movement dimensions, and grounds every signal in a 25,010-horse measured cohort, validated against 5,233 mature careers. Below is what we measure publicly — and at the bottom, what we don't.
A real frame from a yearling parade (2022 Inglis Easter, Lot 7) with the anatomical landmarks our model tracks. Hover any point to see which dimensions of the score it feeds.
A disciplined set — three frame proportions, one carriage, two stride mechanics, and two soundness checks. Eight Furlong measures these on every horse it sees.
Overall frame length and scale, measured from the topline. The base every other measurement is normalised against.
Chest depth (back to belly) divided by body length. Indexes heart/lung capacity — the engine-room measure.
How the neck and head are carried through the walk — tracked frame by frame, not from a standing pose.
The standing geometry of the hind end — the frame the propulsion has to work through.
How the major joints open and close as the horse moves — sampled every frame, not from a still.
The standing geometry of the fore end, where stride freedom is either available or it isn't.
How the hind end times against the front through the walk cycle. Measured on both sides across every usable stride.
How the tail is carried, and how much it moves through the walk. A quiet but consistent contributor to the score.
Showing what we measure is rigour. Showing how we combine it would be a gift to the next desk. Three things we deliberately keep private:
How the eight dimensions combine into a single value-screen score.
Which dimensions drive the score — and by how much — across price band and sex.
The yearling-to-race-outcome joins behind the validation set, and how thresholds are calibrated against them.
We publish what we measure. How we combine it is the IP.
"We measure yearlings, not predictions. The score is a soundness screen — it tells you which horses are built to keep racing, not which one is fastest."
Briefings for bloodstock managers, syndicators and trainers. Eight Furlong is private and bespoke — we don't publish picks.