Some interesting facts about the legendary Spitfire (12 Photos) By: Staff In: Facts, History, United Kingdom, Web Only Jun 30, 2016 2 Liked! 2 Disliked 0 1 The maximum top speed of the Supermarine Spitfire was 363 MPH. Its range was 991 nautical miles, but when it was in combat, its range was about 410 nautical miles. It could fly as high as 36,000 feet, however the cabin was not pressurized. Category: Facts, History, United Kingdom, Web Only Like this post? 2 Liked! 0