Someone vandalized the apartment block gym, so it was closed off for the past week. I have been doing a half hour run along the side of the dock instead of the usual half hour bike ride or row. The half hour run is a simple "out and back" done three times. I have done this run twice now and I am running times slightly on either side of 29 minutes. I haven't felt my best on the runs, but the times appear to be quite good: around 4 mins 20 per km. It made me suspect that I undermeasured the run, so I took 200m off it when I added it to my spreadsheet.