How many letters does the top answer for “wrote the road back” have?

The most common answer is remarque (8 letters).

Crossword clue: wrote the road back

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

remarque 8 letters wd-fact-v3

wrote on the road 67% similar → kerouac

author of the road back 50% similar → remarque

wrote back to the future 50% similar → zemeckis

wrote the road to oz 50% similar → baum