'Just in the nick of time' – The idea being that a nick was a small cut or notch, or in other words a narrow and precise marker, so that if something was in the nick it was precisely where it should be. This was then later elaborated to include of time for the expression of more ideas. Nowadays the phrase means something that happened just in time, at the last possible moment.
Day 13 of Juneathon and day 2 of the World Cup. I managed to run after the first game and got back 'just in the nick of time' to watch the second game. The shortest run of Juneathon so far.
Day 13 mileage = 2.41
Total Juneathon mileage = 56.80