Runner (Stargate)

In the fictional Stargate universe, a Runner is an individual rejected by the Wraith as food. Instead, they are released with a tracking device embedded in their vertebrae. The Wraith then hunt down the Runner. This may be seen as a sport by the Wraith, or training. The Runners tend not to last very long, due to the tracking device.

Possibly the most famous and longest lasting Runner is Ronon Dex, who ran from world to world for over seven years before finally meeting a team from Atlantis and having the tracking device removed.