I have done 2 marathons, last one about a year ago.
1-2 selected tips a race in horses, harness and dog.
10am in USA trotters, Then to NZ, horses and dogs.
Then to Australia, mainly horses.
Then to South Africa horses.
Then to UK
10am - 3am 17 hours straight with 50 winners out of 2 only tips per race, as said not all races.
Boy was I tired.
Jim