There are 17 11-letter words that start with 'tur'.
Note: These 17 11-letter words that start with 'tur' are found from the USA & Canada version of the tournament Scrabble word list.
Also see words start with turb, turn, turf, turg, turt, turp, turk, turm, tura, turi, turr, turd, turq, ture, turo, turv.
4-letter words start with 'tur' (4)