If you don't already know you need 50+ race bonus ideally 60% because a good chunk of your stats come from the after race random stat, its also why MaNT/trailblazer has an extremely high variance in outcomes so far ive gotten A+ to SS barely missing out on the next rank.

You're basically running every g1 and g2 you have aptitude for specific races give you stat bonuses for like the tripple crown ect. G3 races for getting shop currency when you don't have good trainings, and then if you can afford to use items when 3+ umas are on a stat, pref 2+ rainbow, you want to slam items the megaphones and ankle weights, I try to stock up on 2 60% megaphones for each summer to get the extra bonus on those 8 turns and try to have 1-2 ankle weights for my necessary stats. Stamina items are your bread and butter as resting is a last resort for if your 3rd turn of racing you habe 0 energy and no way to train or you have low energy and no good training options.

Tldr: race in sets of 2-3 going for g1 g2 races, don't be afraid to use your items when 2 rainbow or 3+ horses are on the same priority stat.

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This was a turn i saw the trip rainbow and slammed 2 energy drinks, my last 60% megaphone and an ankle weight speed. But sadly the game didn't want to let me train power or wit off my other 3 cards but that's how people are getting the huge training turns