While it was theoretically possible to proceed with the cavalcade, it would be irresponsible, he said.
The heightened risk Covid-19 and its Omicron variant posed to the events' participants, caterers, landowners and rural communities was not a risk they, the Millers Flat Host Town Committee and key Cavalcade Trail representatives, were willing to take.
Concerns from landowners and the potential of taking Covid into remote areas was a factor, Hopgood-Bride said.
It is the second cancellation of the event. The last time was in 2000 because of fire risk.
In 2020, the cavalcade finished before the first national lockdown, and last year went ahead without the host town celebrations.
"We thought it was worth persevering with [during Covid]. We believed we could make it happen but unfortunately, our worst fears have been realised," Davis said.
Hopgood-Bride said organisers were acutely aware of the financial effect cancelling would have on Millers Flat and community groups who relied on the event for fundraising.
"The knock-on effect is so big, and we're very aware of it," she said.
OGHT paid $300,000 to $350,000 from the cavalcade to non-profit groups annually. The event brought about $1.2 million to host town areas.
"It's a significant financial loss to the OGHT and Teviot community."
Millers Flat Host Town Committee chairwoman Hilary Spedding said while it was disappointing, the priority was to keep the community safe.
"We know it's our responsibility to keep our community safe at the end of the day."