This was the first time I'd even raced 10km outside of an Olympic distance triathlon. Was hoping to go sub 40 mins, based on a 42 min triathlon PB. Was stoked with 38:15. With one km to go a realised that 37 something was a chance, but the legs were gone. Splits were 18:40/19:35. I can be sure I went pretty hard - my calves are still poked one week later!