I've not done a parkrun that is actually on a beach. It could be hard work if the sand is soft. I did actually run along the beach when we were in Hervey Bay a few years back, but I was alone then. Roos tend not to feature around here, but we do get some small deer.
!BEER
Because the tide was out, the sand was firm. Twice earlier this year the event was cancelled because of high tides as the water meets the vegetation