Ruth Chepngetich’s performance at the Chicago Marathon on Sunday shredded record books and reset expectations on what might be possible over 26.2 miles.
The Kenyan clocked two hours nine minutes 57 seconds, taking nearly two minutes off Ethiopian Tigst Assefa’s world record.
But the detail below the headline time was just as jaw-dropping.
Chepngetich came through the halfway mark in 1:04:16, which would have been the fifth-fastest women’s half-marathon time in history.
The 1:05:41 she ran for the second half of the race would have been 36th on the all-time list.