Based on the information provided in the graph, the line corresponding to the participant who ran 2.5 km in 45 minutes is labeled Greg. Since none of the individuals completed 5 km in 45 minutes, the only individual with data provided at that specific time of 45 minutes is Greg, who covered 2.5 km. Therefore, "Running 212 km" may be a misinterpretation or typo, as that distance is not relevant to the context of the 5 km run being analyzed.
Given that the question may be inquiring about who reached their designated distance closest (though it seems to be incorrectly phrased), it is most accurate to respond with the names provided based on the available points.
The answer is: Greg