The firm has decided to offer its online promotion in shops to help tackle the fixed-odds betting terminals (FOBT) stake cut, which is set to take place from April 1.
Until today, best odds guaranteed bets were for online selections only - but this will now be introduced in shops.
For example, if a punter backed a horse at 10/1 and saw these odds drift to 12/1 at the start of a race, the punter would automatically be paid out at the bigger price if the bet was a winning selection.
Ladbrokes Coral will be launching its extended promotion via social media, in the press and in its betting shops.
Gala Coral Group PR director Simon Clare said: "This is the biggest racing offer ever to hit the high street and is a clear signal of our intent as we face up to a new era for betting shops from April 1.
"There is no question a seismic change in our betting shop business is going to occur when the FOBT stake restrictions come into force. But we are now taking pre-emptive action with the launch of this significant betting shop offer."
