1:58
thanks for asking!
if a Half Marathon was ever run under such perfect conditions of course/weather I'd be VERY surprised - practically everybody I know of got a PB - one guy had, like me, never gone sub-2hr before and clocked 1:48!
another guy lowered his PB by 4 mins to 1:21
another ran a 3.5min PB to 1:18
it was a magical day