Kelvin Kiptum set a world record in the Chicago Marathon on Sunday, finishing in 2 hours, 35 seconds to shatter fellow Kenyan Eliud Kipchoge’s old mark by 34 seconds.
Sifan Hassan of the Netherlands also took advantage of cool and cloudy weather that’s considered ideal for a marathon to win the women’s race in 2:13:44 — the second-fastest ever for a woman at the 26.2-mile distance.
Kiptum won the London Marathon in the spring in 2:01:25 and shaved almost a minute off the world record set last year in Berlin by Kipchoge, a two-time Olympic champion and the most successful marathoner ever.
![Thousands of runners head north on Columbus Avenue in Grant Park to start the Chicago Marathon. Photo / AP](https://www.nzherald.co.nz/resizer/v2/7TSV6MGFXFFSBEMLUI747GU3BM.jpg?auth=f2a029aa05e39966826be042cae0a825deec730a53756dc5de77a3fc16a78a10&width=16&height=10&quality=70&smart=true)