Organisers of Ironman Wales have postponed the 2021 triathlon event which was scheduled for September later this year.
It's the second time the Pembrokeshire event has been cancelled because of the coronavirus pandemic.
In an email sent to athletes on Friday afternoon, organisers said it had been working with Pembrokeshire Council to "find a way forward for this year’s event".
But uncertainties around moving to alert level 0 in Wales and the "unique event site" in the walled town of Tenby meant it could not go ahead.
They said: "Uncertainties around moving to alert level 0 in Wales, the current epidemiological infection rate and the unique event site at Tenby and Pembrokeshire as well as large crowds expected to gather on race day were discussed in a meeting with local authorities.
"Due to the unique race site in Tenby, the recommendation has been made not to support the host agreement for this year and to reschedule the event to 2022. While we were hoping otherwise, we respect the council’s position and will follow its recommendation to reschedule the event to 2022.
"So, it is with a heavy heart that we announce today that Ironman Wales will return on September 11, 2022."
Crowds typically line the zig zags down to Tenby's North beach on the morning of the event to watch the iconic swim, which kicks off the long distance triathlon. Athletes must swim 3.8km, before cycling 180km and finishing with a full marathon.
The Ironman event regularly attracts thousands of entrants as well as their supporters, who typically pour into Tenby town to watch athletes cross the finish line until well into the night.
The last time the event was held, in 2019, former Welsh rugby International captain Gareth Thomas stole the show as he crossed the finish line with an emotional outburst after revealing he was HIV positive.
The event is a welcome boost to the local Pembrokeshire economy at the end of the summer. Locals say there are now more triathletes per capita in this part of Wales than anywhere else in the world- Read how Ironman has transformed the town here.
Ironman has just agreed a new five-year host venue agreement with Pembrokeshire council to ensure that Ironman Wales will happen annually in Tenby until at least 2026.
It comes as Green Man Festival 2021 announced it was going ahead following the latest lockdown easing in Wales. You can read the full timetable of for lockdown being eased here.
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