The Montana Simulcast Racing network handled a record $362,489.40 in wagering on Kentucky Derby day at its eight off-track betting locations across the state.
"Unbelievable Day !!!" Tom Tucker, executive secretary of the Montana State Board of Horse Racing said in a Tuesday email.
The old record of $257,357 was set in 2004 when the Montana Simulcast Partners ran the network.
Tucker said much of the betting excitement on Derby Day could be attributed to the fact a Billings-owned horse, Frac Daddy, was in the Kentucky Derby.
Another plus was the fact the simulcast network was back up and running and offering Derby wagering from Churchill Downs after missing out last year, he added.
The two Billings simulcast locations -- at the Won $800 Casinos -- led the way in the state for betting handle, Tucker said.
However, no dollar amounts for each individual site were immediately available from Montana Simulcast Racing.
A percentage of the state's Derby Day handle will go back to help support live racing in the state.
Living racing will begin at Miles City on Sunday. They will also hold races on May 18-19.