CREATE TABLE table_26923 ("Rnd" FLOAT, "Date" TEXT, "Race Name" TEXT, "Track" TEXT, "Location" TEXT, "Pole position" TEXT, "Fastest lap" TEXT, "Most Laps Led" TEXT, "Winner" TEXT)

On what tra k was the march 19 race held?
SELECT "Track" FROM table_26923 WHERE "Date" = 'March 19'
SELECT "Track" FROM "table_26923" WHERE "Date" = 'March 19'