Half Marathon in a 70.3

This past weekend I ran a 21.1km race in 1:15.07 and am wondering what this would translate to in the run portion of a half ironman? Based on people’s experiences, what do you think my predicted run would be?

Cheers!

giving this a bump b/c i want to know what others think.
it depends on if you execute the swim and bike well and how much bike fitness you have. that is important.
i’m about where you are for an open half and i’m around 1:22-1:24 for HIM. that’s been with a 2:16-2:19 bike splits generally. i think i can get a little closer to sub 1:21 though i think it would hurt quite a bit.