Final declarations for the 2026 Grand National are this morning at 10am. Once the confirmed field of 34 is now published, you have one tool above all others that consistently narrows the field from 34 to a manageable shortlist of genuine contenders: the trends. Here is the complete checklist, with the data behind each filter, ready to apply to today's confirmed runners.
Filter 1 — Age
The optimal age range for Grand National winners is eight to ten years old. 2014 was the last time a horse older than ten won the race. Horses aged seven are not impossible but are historically underrepresented in the winner's enclosure. Filter out anything below seven or above eleven. This eliminates several runners from most fields immediately.
Filter 2 — Weight
In the last ten renewals, only four winners carried more than 10st 13lb, and none carried the maximum top weight in recent years. The most productive range for winners is 10st 3lb to 10st 13lb. Any horse carrying 11st 4lb or more is working against the historical evidence. Note that this filter does not eliminate favourites automatically — I Am Maximus won at a high weight in 2024 — but it does identify where the structural advantage lies across the full dataset.
Filter 3 — Seasonal Runs
Since 2010, eight winners had at least four seasonal runs before winning. The minimum is three — Corach Rambler, Tiger Roll, Minella Times and One For Arthur all won off three runs. A horse with one or two seasonal runs carries a fitness and rhythm disadvantage. Filter to horses with three or more runs in the current season. Filter 4 — Three-Mile Form Nine of the last ten winners had won or placed at three miles or further in the same season they won the Grand National. This is the single most consistent trend across all the filters. A horse that has not competed at three miles or further this season and shown it can stay has not demonstrated the fundamental qualification the race demands. Filter to horses with at least one run over three miles or further this season showing winning or placed form.
Filter 5 — Jumping Safety
Eight of the last ten winners had not fallen in the season they won the National. Horses with a fall on their record in the current season carry a specific concern over the unique Aintree fences. A fall elsewhere does not guarantee problems at Aintree — but the historical record is clear that horses arriving with a clean jumping record in the current season have a significantly better record than those who have come down at a fence.
Filter 6 — Freshness
The emerging trend of the last three years is the prep race bypass. Haiti Couleurs won the Irish Grand National last year after deliberately skipping Cheltenham. Nick Rockett was specifically prepared for Aintree without a Festival run. I Am Maximus won in 2024. Horses that arrive at Aintree fresh rather than on the back of a gruelling Cheltenham campaign consistently perform above their market price. Apply this filter cautiously — Cheltenham form is still relevant — but weight it in favour of horses whose final prep run was not five weeks at the Festival.
Applying the Filters Today
When the confirmed field is published at 10am Wednesday, run each filter in turn. The horses that survive all six filters are your shortlist. Within that shortlist, the ones available at the biggest prices relative to their profile represent the value. Horse Racing Oracle AI applies all six filters plus 200 additional variables simultaneously and publishes the result this morning. Sign up free at horseracingoracleai.com. Want free AI-powered tips every morning? Sign up free at horseracingoracleai.com -> Betting involves risk. Please gamble responsibly. Visit BeGambleAware.org.