The Rocket Racing League Rocket Racer or Rocket Racer is the competition formula used by the Rocket Racing League for the rocketplane competition air racers for the racing series. The formula has evolved:
- XCOR Prototype X-Racer, the prototype design
- Rocket Racing League X-Racer Mark I
- Rocket Racing League X-Racer Mark II
- Rocket Racing League X-Racer Mark III