swimming 30:47 [2] 1.05 km (29:19 / km)
Mucked around for a while trying to get the goggles to fit right - finally realized the straps on my head were twisted and when I sorted that out they were fine.
The lane I ended up in had the spigot for new water which was cold. So for the last 2 or 3 strokes each lap I got a dose of cold water. Unpleasant when I started, refreshing for most of it.
Lost track of laps so decided to stop when I hit 30 minutes instead of stopping and checking the lap count on my watch; otherwise, I'm sure I would have stopped at 1km.