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Webster 1913 Edition

Noun.

One who promenades.

promenader ‎(plural promenaders)

Agent noun of promenade; one who promenades.
- 1924, Herman Melville, Billy Budd, London: Constable & Co., Chapter 15,
  […] Claggart's unobserved glance happened to light on belted Billy rolling along the upper gun deck in the leisure of the second dog-watch, exchanging passing broadsides of fun with other young promenaders in the crowd […]
(chiefly Britain, music) An attender at, or devotee of, promenade concerts.

promenader