The Spanish runner, widely regarded as the greatest of all time, has won the UTMB four times and became the first person to run the course in under 20 hours last year.
However, he reported a “small injury” as he struggled home in 48th place, and has since revealed that it is more serious than first thought.
The bone edema has now seen him ruled out of the Sierre-Zinal, the esteemed mountain race in the Swiss canton of Valais with which he is firmly associated.
Jornet has won the race a staggering nine times since 2009, and set the record for the 31km course in 2019, finishing in 2:25:35.
After Andreu Blanes Reig won last year’s race, Jornet stated in March that he would return for the 2023 edition.
That plan has been scuppered, though, with the Golden Trail World Series, which the Sierre-Zinal features on, confirming his withdrawal.
It’s official, Kilian Jornet will not take part to Sierre-Zinal this year,” an Instagram post said. “Injured in the right hip, the multiple winner suffers from bone edema.
“But Kilian will be present in Zinal during the live broadcast. He will be behind the micro in the French and English live on @eurosport 🎤
“Paying attention to injuries and opting for recovery is a wise decision that is part of an athlete’s life.
“Wish with us a good recovery to Kilian! We hope to see you soon in the mountains!”
Jornet’s absence means both Sierre-Zinal course record holders will miss the 2023 race – its 50th edition – with Maude Mathys unable to compete in the women’s event.
Golden Trail World Series organisers also revealed that the Swiss runner has had surgery for Haglumd’s syndrome, an abnormality of the bone and soft tissues in the foot, and is undergoing a recovery period.
Britain’s Tom Evans has also ruled himself out of Sierre-Zinal after he recently announced that he will be heading to UTMB in a tweak to his 2023 plans.
Kenyans Patrick Kipngeno and Philemon Kiriago will be sensing opportunities for Sierre-Zinal wins with Jornet and Evans out, as will 2016 champion Petro Mamu.
Nienke Brinkman will fancy her chances in the women’s race with Mathys no longer competing – the Dutch runner was second behind the record-setter in 2021.
She will be up against the likes of WMRA World Cup champion Joyce Muthoni Njeru and her Kenyan compatriot Lucy Wambui Murigi, a three-time Sierre-Zinal winner.