After the very pleasant validation of Magdalena Oliver Gabarró by the LongeviQuest, a pattern of cases of exceptional longevity in the wider region of Catalonia and Mediterranean France becomes even more pronounced. Based on history/culture, we could perhaps also call this region "the Occitano-Catalan Area".

It is interesting that all 3 115+ cases in Spain come from Catalonia;

1) Maria Branyas Morera 117 years, 168 days (8th-oldest ever)
2) Ana Vela-Rubio 116 years, 47 days (29th-oldest ever)
3) Magdalena Oliver Gabarró 115 years, 182 days (48th-oldest ever)

Ana Vela-Rubio was born in Cordoba, but moved to Catalonia in 1950 at around ~49 years old.
Maria Branyas was also born in the USA, but she was the child of Catalan immigrants who had gone to the USA a year earlier and returned to Catalonia with her shortly, in 1915, that is, when Maria was only ~8 years old.

Despite making up only 16% of Spain's total population (8 millions out of 50 millions), Catalonia has all three of the country's historic 115+ supercentenarian cases

Just as an extra; Joan Riudavets Moll (114 years, 81 days) is the oldest man in Europe ever and was the oldest living man in the world when he died in 2004. He lived on the island of Menorca, which is culturally, linguistically, and historically, tied to Catalonia and geographically very close.

We also have the case of Jeanne Bot, who lived practically her entire life in French Catalonia (or Northern Catalonia), on the border with Spain.

So let's take a look at the 3 oldest French women (who are also the only 116+ cases in France);

1) Jeanne Calment 122 years, 164 days (1st-oldest ever)
2) Lucile Randon 118 years, 340 days (4th-oldest ever)
3) Jeanne Bot 116 years, 128 days (23rd-oldest ever)

Jeanne Calment and Lucile Randon were born in Arles and Alès‎‎ , which are only ~70 kilometers apart and are located near the Mediterranean Sea, while culturally and historically they are located in Occitanie (Alès‎‎ is located in the namesake administrative region too), which is adjacent to Catalonia. Calment lived her entire life in her hometown of Arles. Lucile Randon moved around France quite a bit during her life, but as a centenarian she retired to nearby Toulon, located on the Mediterranean coast.

Occitania (population of 6 millions) and Provence-Alpes-Côte d'Azur (population of 5 millions) as administrative regions have the only 3 116+ cases in a France of 69 millions. If we limit our interest only to the historical/cultural region of Occitania, the population is even smaller.

These observations about how many extremely long-lived outliers Catalonia and Occitania/Mediterranean France have produced are even more striking when you consider that France and Spain as a whole are two of the top countries internationally in life expectancy. So I would say that if there would be any confirmed "blue zones", this region is definitely a strong candidate.