CREATE TABLE table_24596 ("Year" FLOAT, "Date" TEXT, "Driver" TEXT, "Team" TEXT, "Manufacturer" TEXT, "Laps" TEXT, "Miles  ( km ) " TEXT, "Race Time" TEXT, "Average Speed  ( mph ) " TEXT, "Report" TEXT)

How many miles were driven with the average speed at 116.81?
SELECT "Miles (km)" FROM table_24596 WHERE "Average Speed (mph)" = '116.81'
SELECT "Miles (km)" FROM "table_24596" WHERE "Average Speed (mph)" = '116.81'