Sisson ran the AR at the US Half Marathon champs in Indianapolis and while she dropped the rest of the women's field almost immediately, she did have the help of a couple of male pacers, including Brian Harvey, who was with her the entire way.
This was a few years in the making for Sisson as she ran 67:30 in Houston in 2019 and 67:26 in Valencia in 2020 when the AR was 67:25. Sara Hall lowered the AR to 67:15 in Houston in January and now it's 67:11.