The restrictions, in response to the rise in coronavirus (COVID-19) cases, will remain in place until the end of the month.
A spokesman for Market Rasen Racecourse said: “Like every racecourse in Great Britain we are regulated by the British Horseracing Authority and they advised us at lunchtime on Monday [March 16] that all racing is to take place behind closed doors, which means without spectators, immediately until the end of March.
“That includes our fixture on wednesday of next week.”
Despite the growing number of coronavirus cases, 1,400 people gathered at the racecourse for yesterday’s meeting (Sunday, March 15).
A spokesman said: “We were delighted with Sunday.
“A happy crowd in excess of our expectations celebrating all that is good about Market Rasen.
“A first class afternoon on and off the track, with extra hand washing facilities available.”