In response to a query from Guinness Superlatives, London, as to the maximum distance from the earth reached by Apollo 8 and Apollo 11, MSC said the maximum distance for Apollo 8 was 377,348.704 kilometers, during the 10th lunar revolution.

The maximum distance from the earth for Apollo 11 was 389,921.3764 kilometers, during lunar orbit insertion. However, because of the requirement to exceed previously established space records by 10 percent, the altitude achieved on Apollo 8 was still the recognized record.