How many letters does the top answer for “a belt of parks or rural land surrounding a town or city” have?

The most common answer is greenbelt (9 letters).

Crossword clue: a belt of parks or rural land surrounding a town or city

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

greenbelt 9 letters wn-def

a belt of parks or rural land surrounding a town or city

greenway 8 letters wn-def

a belt of parks or rural land surrounding a town or city