When betting on horses to win, punters estimate that the average probability lies between 34% and 36%. Some of the factors affecting the probability include:-
Type of race – the favourite horse is more likely to win in a dirt race compared to a turf race.
The number of horses in the race – the more the number of participating horses, the lesser the chance of the favourite horse winning, and vice versa.
Distance covered – winning chances significantly improve if the distance covered during the race is similar to one during horse training or lesser.