Do they actually allow the horses to run to exhaustion in the heat?
Googling
No, there are mandatory vet checks that can last large amounts of time that are deducted from all horses time. So the cold/heat makes a negligible difference, the horses get long rest periods either way and have historically often won even in years where it was very hot.
Do they actually allow the horses to run to exhaustion in the heat?
Googling
No, there are mandatory vet checks that can last large amounts of time that are deducted from all horses time. So the cold/heat makes a negligible difference, the horses get long rest periods either way and have historically often won even in years where it was very hot.