The Welsh Grand National is set to take place behind closed doors.
Crowds returned to four courses in England on Wednesday - for the first time since March, apart from two previous pilot race days - after the UK Government relaxed its Covid-19 policy.
But Wales will not be following suit.
Welsh Government coronavirus guidelines mean Chepstow's Welsh National on 27 December - the biggest date in the racecourse's calendar - will take place without spectators.
A statement on Chepstow's website read: "The Welsh Government has announced spectators will not be allowed to attend race meetings in Wales until early 2021 due to the Covid-19 pandemic.
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"It had been hoped we could welcome spectators at Chepstow and Ffos Las following Boris Johnson's decision to allow customers to attend elite sport in tier 1 and 2 regions in England from 2 December.
"Unfortunately this is not the case, and discussions with Welsh Government are continuing. We hope for a positive outcome."