Go, robodog, go.Dog RacingA robot dog has run and completed an entire 26.2 mile marathon.Built by the South Korean Advanced Institute of Science and Technology (KAIST), the dogged competitor — dubbed RAIBO2 — is the first quadrupedal robot to complete a full-length marathon in an official competition, the university claimed in a statement.The event took place on Sunday. Clocking in at a time of four hours, 19 minutes, and 52 seconds, the robodog’s no Olympian yet; the first place time by a human competitor in the race was two hours, 36 minutes,…