It's just been posted on the Iditarod latest news page that 28 riders have now checked in and most out of Yentna Station.
John arrived with James Leavesley 1.15am Alaska time, the two of them then left at 5.05am.
They are now on their way (and may have even got to) the next checkpoint, Skwentna Roadhouse, which is the 90 mile point.
I can't describe how excited I was when I saw that he had passed the first all important checkpoint, I did a little dance!
Check where the rest of the racers are on the leaderboard.