Thirty six minutes. But worth every minute if you are a WW II buff. This is spectacular live footage of the 3,000 mile round trip air assault upon the Japanese mainland, with 3 bomber wings and a host of P-51's. This is the way to end a war. No matter what war footage you ever saw before, this is the real deal and will keep your undivided attention. The P-51 & B29 footage is remarkable. The strafing runs by the P-51 pilots were incredible. There are several “breaks” as the film canisters are changed, just wait for the count down.