Your horse gallops on its own. You pick the lane, ride the slipstream and choose the moment to push for home.
Hold PUSH to speed up. It burns stamina; let go to refill.
Swipe to change lanes. The rail is shortest round the bends.
Tuck in behind a horse to refill faster. Don't push into its tail.
Watch the blinkers, dodge the mud, kick in the home straight.