CREATE TABLE table_64575 ("County" CLOB, "Location" CLOB, "Distance" FLOAT, "Total" FLOAT, "Notes" CLOB)

How much Distance has Notes of north end terminus of ar 155?
SELECT SUM("Distance") FROM table_64575 WHERE "Notes" = 'north end terminus of ar 155'
SELECT SUM("Distance") FROM "table_64575" WHERE "Notes" = 'north end terminus of ar 155'