AHZDF-EPLHVO XHX OMKNUZ ABH MO PDOH P BMNBDI XZHEMJMUKW LMFFDU-FMOWPKJU ZVKKUZ: LMDUZ JIZVO.
TODAY’S CLUE: X = P

Miley Cyrus performing
at Primavera Sound
in Barcelona in 2019.
Image Source: Wikipedia
ANSWER: WORLD-FAMOUS POP SINGER WHO IS ALSO A HIGHLY PROFICIENT MIDDLE-DISTANCE RUNNER: MILER CYRUS.