Board Thread:Social and Race Teams Threads/@comment-27048832-20170531214815/@comment-30967537-20170711083029

I didn't bother with this challenge, boring!

You start an endurance with less than 90 seconds. If you prepared before the challenge started by losing a few races you could reduce the distance required to win so that you didn't need to overtake any cars and completed the race in the start time. Then you go through the end-of-race screens and retry in about 20-30 seconds. So, yes, it was possible.

But, given that the challenge ran for 25 hours (1500 minutes), it is highly unlikely that one person played non-stop.