The Guineas are run. The jump season has ended at Punchestown. The flat season now dominates British and Irish racing through the summer. Here is what to watch in May.
Chester Festival — May 6-8
Three days of flat racing at Chester's uniquely tight left-handed circuit. The May Festival at Chester is the first major flat fixture following the Guineas and the most tactically distinctive meeting of the spring. The draw is arguably the most important single variable in any flat race at Chester — inside stalls have a proven, measurable advantage on the sharp bends of the Roodee.
The Chester Vase is the feature staying race — a traditional Derby trial over a mile and a half that provides stamina evidence for Epsom in June. Chester Cup day on Thursday carries the Chester Cup handicap — one of the most competitive staying handicaps of the spring season.
York Dante Festival — May 14-16
The Dante Stakes at York on the Thursday is the primary Derby trial in Britain. Named after the 1945 Derby winner who went unbeaten through his Classic season, the Dante over a mile and two and a half furlongs at York produces the clearest form line for Epsom of any prep race available. A horse that wins the Dante convincingly and translates it to Epsom has achieved the two-step preparation that Classic winners consistently follow.
York's Knavesmire is a galloping, flat, wide track — the opposite of Epsom's undulating, left-handed switchback. Horses that travel powerfully at York and then stay at Epsom typically have the ideal physical profile for the Classic.
Epsom Derby and Oaks — June 6-7
The season builds toward Epsom. The Derby on Saturday June 7 and the Oaks on Friday June 6. Every race between now and Epsom is assessed in the context of what it suggests about Classic potential. Trotbot begins its Derby ante-post analysis in mid-May — the data profile for the ideal Derby winner is specific and consistent across the race's history.
What Trotbot Watches in May
Trainer targeting patterns through May prep races. Going preferences as the ground dries into summer. Jockey bookings as Classic preparations solidify. Distance suitability as horses step up from a mile to a mile and a half for the first time.
Free daily Trotbot selections throughout May at horseracingoracleai.com
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Facts verified via web search May 4 2026.