How many letters does the top answer for “a long walk usually for exercise or pleasure” have?

The most common answer is hike (4 letters).

Crossword clue: a long walk usually for exercise or pleasure

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

hike 4 letters wn-def

a long walk usually for exercise or pleasure

hiking 6 letters wn-def

a long walk usually for exercise or pleasure

to walk for pleasure, display, or exercise. 50% similar → promenade