The Roman circus of Mérida is a ruined Roman circus in Mérida (Spain), the Roman city of Emerita Augusta. Inaugurated in the first quarter of the first century CE, it was used for chariot racing, and was modelled on the Circus Maximus in Rome. Measuring 440 m in length and 114 m in width, it is one of the largest and best-preserved examples of a Roman circus. It could accommodate up to 30,000 spectators. An inscription suggests that it was restored in the 4th century CE.