CREATE TABLE table_21765 ("Number" FLOAT, "Name" TEXT, "Kilometer" FLOAT, "Location" TEXT, "Length  ( in m ) " FLOAT, "Average climb  ( % ) " FLOAT)

The Keutenberg race had what race length?
SELECT MAX("Length (in m)") FROM table_21765 WHERE "Name" = 'Keutenberg'
SELECT MAX("Length (in m)") FROM "table_21765" WHERE "Name" = 'Keutenberg'