Maria Claire Evert Alecha Adorna-Castel (born July 13, 1993)[1] is a professional Filipina triathlete and swimmer.

She finished third behind champion, Hoi Long from Macau and Choi Yan Yin from Hong Kong.

[3] At the ULAH Tri United 1 at Dungaree Beach in Subic Bay Freeport held on March 1, 2015, Adorna finished second behind Australian Mitch Robins.

[4] Adorna won the gold at the triathlon event at the 2015 Southeast Asian Games behind fellow Filipina Kim Mangrobang on June 6, winning the first gold medal for her country of that year's Games.

[citation needed] She was among the two athletes that represented the Philippines at the 2019 World Beach Games.