CREATE TABLE table_204_409 (id NUMBER, "date" CLOB, "race name" CLOB, "location" CLOB, "uci rating" NUMBER, "winner" CLOB, "team" CLOB)

how long did the tour of libya last ?
SELECT "date" FROM table_204_409 WHERE "race name" = 'tour of libya'
SELECT "date" FROM "table_204_409" WHERE "race name" = 'tour of libya'