Amerikabomber contract competition in WWII Nazi Germany Luftwaffe for a space bomber capable of striking the United States from Germany
Ansari X Prize, the first X Prize Foundation prize for achieving repeated suborbital spaceflights using a space tourism capable vehicle, which was won by the SpaceShipOne team of Mojave Aerospace Ventures composed of Scaled Composites, Burt Rutan, Paul Allen and Vulcan Inc.
Google Lunar X Prize, the X Prize Foundation prize sponsored by Google to put a robotic rover onto the Moon, won by no team
America's Space Prize, the Bigelow Aerospace sponsored prize to create an American orbital space tourism capable vehicle, won by no team
Caleb A. Scharf (1 May 2013). "Space Race: A Comparison of the Speediest Spacecraft". Scientific American. — a literal spacecraft speed comparison, instead of the metaphorical races for outer space, listed above.